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Spring Rate Chart for Evo X
I think it's time to start a sticky on all the different Springs and Coilovers out there for the Evo X. If you have any additions or corrections, please post here and I or a moderator will update the stats. I'm starting to add in a "Street Price" which is an approximate average of prices seen with a basic google search and may not be 100% accurate. Just keep in mind that sometimes you get what you pay for and the lowest price vendors may or may not include the same (or any) support after the sale when it comes to tuning your suspension.
Springs and Shocks: Springs ...................... Front Rate ........ Rear Rate ...... Front/Rear Drop ...... Street Price Stock GSR ...................... 3.5 kg ........... 2.8 - 3.7 kg .......... 0.0" / 0.0" ................. OEM Stock MR ........................ 3.5 kg**........ 2.9 - 3.8 kg .......... 0.0" / 0.0" ................. OEM Cobb ........................... 3.2-4.6 kg ......... 3.6 - 4.9 kg ......... 1.3" / 1.4" ................ $225 Eibach Pro .................. 2.6 - 4.9 kg ...... 1.8 - 4.8 kg .......... 1.2" / 1.0" ................. $220 GTWORX Tarmac ............ 5.5 kg ................ 5.5 kg ............. 1.2" / 1.0" ................. $299 H&R ............................... 4.2 kg* ......... 3.4 - 4.4 kg* ....... 1.4" / 1.3" .................. $200 Muellerized ...................... ? kg .................. ? kg ................ 0.7" / 0.6" ................ $350 Swift Sport Mach ........ 2.7 - 4.3 kg ...... 2.3 - 4.4 kg .......... 1.0" / 0.6" ................. $300 Swift Spec R ................... 5.5 kg ............... 5.5 kg ............. 1.25" / 1.0" ................ $315 Tanabe GF210 ............... 4.5 kg ............... 3.5 kg ............... 0.7" / 1.1" ................ $220 Tanabe DF210 ............... 4.5 kg ............... 3.3 kg ............... 1.1" / 1.4" ................ $220 Tein S-Tech .................... 4.2 kg ............... 3.8 kg ............... 1.4" / 1.0" ................ $220 Works .5" ...................... 3.8 kg*........... 3.2 - 4.3 kg*......... 0.5" / 0.5" ................ $265 Works .9" ...................... 3.8 kg*........... 3.2 - 4.3 kg*......... 0.9" / 0.9" ................ $265 * Spring rates estimated: Cobb based on +10% front/rear Works based on +10% front/+15% rear H&R based on +20% front/rear (may even be +25%) ** Estimated based on rears being very close to the GSR Shocks .......................... Damping Stock KYB (GSR) ............... Preset Stock Bilstein (MR) ........... Preset Coilovers: Coilovers .................... Front Rate ....... Rear Rate ............ Damping ..................... Front/Rear Drop ........... Street Price AMR ............................. 8.0-12.0 kg* ... 9.0-14.0 kg* ........... 8-way ............................ Adjustable .................... $2100 Apexi S1 .......................... 8.0 kg ............. 6.0 kg ................ 20-way............................ Adjustable .................... $1500 AST 4100 series .......... 7.0-14.0 kg* ... 9.0-16.0 kg* ... Multi-way / Single ................. Adjustable .................... $2300 AST 5100 series .......... 7.0-14.0 kg* ... 9.0-16.0 kg* ... Multi-way / Single ................. Adjustable .................... $2700 AST 5200 series .......... 7.0-14.0 kg* ... 9.0-16.0 kg* .... Multi-way / Dual .................. Adjustable .................... $4100 AST 5300 series .......... 7.0-14.0 kg* ... 9.0-16.0 kg* ... Multi-way / Triple .................. Adjustable .................... $5500 BC Racing .................... 6.0-10.0 kg* ... 6.0-10.0 kg* .. Multi-way / Single dual .......... Adjustable .................... $1000 BC Racing Inverted ..... 6.0-10.0 kg* ... 6.0-10.0 kg* .. Multi-way / Single dual ........... Adjustable .................... $1200 BC Racing ER series .... 8.0-12.0 kg* ... 8.0-12.0 kg* ...... Multi-way / Dual ................. Adjustable .................... $1850 Cusco Zero-1 .................... ? kg ............... ? kg .................... Preset ............................ Adjustable .................... $1500 D2 Racing RS .................... ? kg ............... ? kg .............. 36-way / Single ................... Adjustable ...................... $850 Eibach Pro-Street-S ......... 6.3 kg ............. ? kg .................... Preset .................. 0.8"-> 2.0" / 0.8"-> 2.0" ....... $1000 Eibach Multi-Pro R1 .......... 8.0 kg ........... 6.0 kg ...... Multi-way / Single dual ..... 0.8"-> 2.0" / 0.8"-> 2.0" ....... $1700 Eibach Multi-Pro R2 ........... ? kg ............... ? kg ............. 10-way / Dual ............. 0.8"-> 2.0" / 0.8"-> 2.0" ....... $2100 Endura-Tech ................... 10.0 kg ......... 10.0 kg ...... 15-way / Single dual ................ Adjustable .................... $2000 Greddy Type S ................. 8.0 kg ........... 8.0 kg ....... 32-way / Single dual ................ Adjustable .................... $1300 HKS Hipermax III ............. 7.0 kg ........... 5.0 kg ....... 30-way / Single dual ................ Adjustable .................... $1800 HKS Hipermax III Sport ... 12.0 kg ......... 10.0 kg ...... 30-way / Single dual ............... Adjustable .................... $1900 JIC FLT-FAS ..................... 10.0 kg ........... 8.0 kg ................. 10-way ................ 0.5"-> 2.5" / 0.5"-> 2.5"........ $1800 JIC FLT-TAR Soft .............. 10.0 kg ........... 8.0 kg ....... 15-way / Single dual ..... 0.5"-> 2.5" / 0.5"-> 2.5".........$1850 JIC FLT-TAR Hard............. 11.0 kg .......... 14.0 kg ....... 15-way / Single dual ..... 0.5"-> 2.5" / 0.5"-> 2.5".........$1950 JRZ RS ............................... ? kg ............... ? kg ............. Multi-way / Dual ................. Adjustable .................... $4600 JRZ RS Pro ......................... ? kg ............... ? kg ............. Multi-way / Dual ................. Adjustable .................... $5300 JRZ 2-way Race ................. ? kg ............... ? kg ............. Multi-way / Dual ................. Adjustable .................... $7600 JRZ 3-way Race ................. ? kg ............... ? kg ............ Multi-way / Triple ................ Adjustable .................... $8900 JRZ 4-way Race ................. ? kg ............... ? kg ............. Multi-way / Quad ............... Adjustable .................. $13100 K-Sport Kontrol Pro .......... 9.0 kg ........... 7.0 kg ........ 36-way / Single dual .............. Adjustable ..................... $850 KW Variant 3 ................... 8.0 kg* ......... 9.0 kg* ........... 14-way / Dual ........... 0.4"-> 2.0" / 0.8"-> 2.2" ....... $2200 KW Clubsports ................ 9.0 kg* ......... 11.0 kg* .......... 14-way / Dual ........... 0.4"-> 2.0" / 0.8"-> 2.2" ....... $2600 KW RobiSpec Streets ....... 8.0 kg* ......... 9.0 kg* ........... 14-way / Dual ........... 0.4"-> 2.0" / 0.8"-> 2.2" ....... $2400 KW RobiSpec Clubsports .. 9.0 kg* ........ 11.0 kg* .......... 14-way / Dual ........... 0.4"-> 2.0" / 0.8"-> 2.2" ....... $2800 KW RobiSpec Competition 9.0 kg* ........ 11.0 kg* .......... 14-way / Triple .................. Adjustable .................... $8000 Megan Street .................. 8.0 kg ............ 6.0 kg ........... 32-way / Single ................... Adjustable ..................... $900 Megan Track ................... 12.0 kg ......... 10.0 kg .......... 32-way / Single ................... Adjustable ..................... $900 Ohlins Stage III DFV ...... 10.0 kg* ......... 7.0 kg* ................ 25-way .......................... Adjustable ................... $3300 Stance GR+ ..................... 10.0 kg .......... 9.0 kg ................. 15-way .......................... Adjustable .................... $1300 Stance GR+ Pro ............... 14.0 kg ......... 14.0 kg ................ 15-way .......................... Adjustable .................... $1400 Stance AL+ Pro ............... 14.0 kg ......... 14.0 kg ................. 15-way .......................... Adjustable ................... $1550 T1R B52 ....................... 8.0-10.0 kg ..... 6.0-8.0 kg ......... 24-way / Single .................. Adjustable ................... $1200 Tein Type Flex ................. 12.0 kg ......... 10.0 kg ..... 16-way / Single dual ..... 0.5"-> 2.4" / 0.0"-> 2.6" ......... $1750 Tein Monoflex .................. 12.0 kg ......... 10.0 kg ..... 16-way / Single dual ..... 0.9"-> 3.0" / 0.2"-> 2.7" ......... $2000 Tein Super Racing ........... 12.0 kg ......... 10.0 kg .......... 16-way / Dual ........... 0.9"-> 3.0" / 0.2"-> 2.7" ......... $3600 Zeal Function Xs ............ 10.0 kg* ....... 10.0 kg* ................. 6-way .......................... Adjustable .................... $2200 Zeal Function X .............. 12.0 kg* ....... 12.0 kg* ................. 6-way .......................... Adjustable .................... $2200 Zeal Super Function ....... 14.0 kg* ....... 14.0 kg* ................. 6-way .......................... Adjustable .................... $2200 * Custom spring rates may be available Coilover Damping Info: Single (rebound only) Single Dual (compression and rebound adjusted together with one knob) Dual (compression and rebound adjusted independently) Triple (compression high/low and rebound) Conversion Chart: Spring rate conversions kg/mm to lbs/in (Data from Vankuen in the Evo 1-9 forums) 1lb = 0.45359237 kg 1in = 25.4mm .45359237 / 25.4 = .017857967322834645669291338582677 So now we know that 1lb/in = .01785 kg kg/mm to lbs/in ----------------------------- 2.0 = 112 2.5 = 133 3.0 = 168 3.5 = 196 4.0 = 224 4.5 = 252 5.0 = 280 5.5 = 308 6.0 = 336 6.5 = 364 7.0 = 392 7.5 = 420 8.0 = 448 8.5 = 476 9.0 = 504 9.5 = 532 10.0 = 560 11.0 = 616 12.0 = 672 13.0 = 728 14.0 = 784 15.0 = 840 16.0 = 896 |
Coil overs:
BC: 8/6 but can be revalved at time of purchase (free?) Stance GR+ 10/10 Stance GR+ Pro 14/14 KSport: 9/7 Megan: Street series 8kg/6kg, Track series 12kg/10kg |
Originally Posted by goofygrin
(Post 6016395)
Coil overs:
BC: 8/6 but can be revalved at time of purchase (free?) Stance GR+ 10/10 Stance GR+ Pro 14/14 KSport: 9/7 Megan: Street series 8kg/6kg, Track series 12kg/10kg If anyone can get the Stock MR Spring Rates as well as the Eibach Pro that would be awesome: Stock MR ....................... ?? kg ............... ?? kg ................ 0.0" / 0.0" Eibach Pro ................. ?? - ?? kg ......... ?? - ?? kg ............ 1.2" / 1.0" |
Zeal Function Xs / Xs-Aluminum / X / X-Aluminum / T / A: Custom spring rate w/ matched valving can be specified at time of order (no extra charge)
Zeal Super Function: 14/14 spec; Custom spring rate w/ matched valving can be specified at time of order (not sure about extra charge) |
Thank you for putting in the time to do this.
Originally Posted by goofygrin
(Post 6019926)
Maybe we should put MSRP/Street prices on there as well? Just so that you know how much each of them costs without having to PM/email a bunch of vendors (who will not get back to you ;-)
I was also thinking for the Coilovers we could possibly post an adjustable range of ride height like: +1.0" to -2.3" / +1.2" to -2.1" Obviously the optimal settings are not going to be the maximum slam but some want the range for car shows and then return them to realistic ride heights for driving. I would imagine that rally drivers may actually raise the ride height as well. Trouble is getting that kind of info for all the coilovers and still be somewhat accurate. I guess I could leave that column listed as "adjustable" unless we get the numbers for that coilover. |
I did some searching on Eibach Pro spring rates and found the numbers above quoted. They seem in line with being about +30% stiffer than stock, but progressive for front as well as the rear.
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I haven't seen HKS springs or coilovers available for the Evo X yet. If you or anyone else finds some stats and where to buy I'll update the chart.
I put in the Robispec KW Streets, no idea on the stats though. |
Added Damping column to Coilovers.
Corrected some specs for Tanabe GF210 Springs and Zeal Coilovers. Added in Tein Springs and Coilovers to the list. Still could use the stock spring rates for the Evo X MR. |
This may be a dumb question, but why is every coilover at least twice the stock spring rate? Are we comparing apples to apples when looking at the spring rate of a traditional spring kit vs. coilover? Do coilovers ride that much more harshly, and would something like Eibach be a realistic option for the track?
Thanks. |
Originally Posted by Tractionlimit
(Post 6094213)
This may be a dumb question, but why is every coilover at least twice the stock spring rate? Are we comparing apples to apples when looking at the spring rate of a traditional spring kit vs. coilover? Do coilovers ride that much more harshly, and would something like Eibach be a realistic option for the track?
Thanks. Coilovers can get away with higher spring rates because they also include upgraded adjustable dampers that allow you to tune them to the spring rates depending on what kind of ride you want. Most will adjust for compression and rebound where a softer setting will be a bit easier on the street to a point and stiffer settings are more for smooth race tracks. Going too far in either direction of adjustment in relation to the spring rate will make the car ride as if it's out of balance. If the settings from front to rear are not tuned to each other properly you can also get that porpoise effect where the whole car oscilates out of balance front to rear. A well setup coilover combo doesn't always have to be harsher on the street, but if the roads are really rough you would definitely feel the increased spring rates and firmer ride. Where Coilovers really shine is on a relatively smooth race track where weight transfer on a good setup is precise and predictable when compared to the OEM springs and shock combo that often lets the car roll too far for crisp handling. I'm no suspension guru by any means and this is just what I've read over the years. Perhaps we can get someone with first hand knowledge to add to that as I didn't really find any good links that talk about the differences when I did a quick google search. :) |
Added info for Eibach Pro-Street, HKS Hipermax III, and HKS Hipermax III Sport Coilovers.
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Tanabe springs: https://www.evolutionm.net/forums/sh...d.php?t=374527
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Why is the rear end lowered more compared to the front on most springs? Its obvious that the front end has more wheel gap.
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That's a good question, it may have to do with the clearance to the body and greater suspension travel in the front. Considering if you turned the wheel to it's most extreme angle and hit a bump you wouldn't want it to hit your body panels. Might be more of a carryover from the rally days since the last time I saw extremely lowered cars at the road course there were cars with 1/2" of wheel gap and no allowance for hitting a bump with the wheel turned.
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Stance changed their spring rate on GR+ from 10k/10k to 10k/9k, just FYI
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Stance changed their spring rate on GR+ from 10k/10k to 10k/9k, just FYI Chris, are you still liking your Eibachs compared to stock? Any plans on going to a coilover setup? Any loss of performance or bouncing with that initial softer spring rate? Thanks again for the great info. |
why does the eibach's have a range of rates?
does it mean available special order? |
They have a Progressive Spring Rate so initial spring rate for small bumps is actually less than stock and as it compresses it will feel stiffer.
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I believe I found the rear spring rate for the X MR here: http://sccaforums.com/forums/thread/333415.aspx (post 339863?)
Of course we rated the OEM rear springs (some goofy tapered/progressive Eibach spring). It was variable rate 160-215 #/in... Maybe someone wants to double check & add to the OP? |
Hiboost, could you also add to your list the various adjustability levels to each coilover design, ie; Single adjustable (rebond only), Single dual adjustable (compression and rebound adjusted together with one knob), Dual (compression and rebound adjusted independently), Triple (compression high and low and rebound)
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I'll see if I can sort out the info tomorrow, any missing bits I'll call out and see what others can find. :P
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For roads in decent condition they are actually slightly softer riding than stock or the same. If you visit extreme pot holes or speed bumps you will definitely feel the stiffer side of them though. The progressive nature of them means they really only have higher than stock springs rates when doing extreme cornering or hitting sharp bumps in the road.
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Originally Posted by Hassan!
(Post 6987351)
Hi I have EVO X GSR, And I want to change springs, Which Springs do you hugest me?
We have really bad roads here and i just want to feel little bet more sporty but not lowering down so much, So which one should i go with? Cobb ........................... 3.8 kg* .......... 3.1 - 4.1 kg* ........ 1.3" / 1.4" Eibach Pro ................ 2.6 - 4.9 kg ...... 1.8 - 4.8 kg .......... 1.2" / 1.0" Swift Sport Mach ...... 2.7 - 4.3 kg ...... 2.3 - 4.4 kg .......... 1.0" / 0.6" Beside spring do i have to install anything else?! Sorry new to this stuff :( |
Good morning everyone, I read through the whole thread but I'm still unclear as to why some lowering springs for example:
Works .9" .................... 3.8 kg* .......... 3.2 - 4.3 kg* ........ 0.9" / 0.9" have a broad range (3.2 - 4.3 kg*) of rate? How come it's not a set rate like the front for instance? |
^ the ones with ranges are progressive spring rates, meaning they get stiffer the more that they're compressed
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Did a few updates, if anyone has new springs or coilovers to add to the list let us know. If there is more info I should be adding to the charts it's just a matter of getting the data for all the products.
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The Eibach coilover springsrates seem to be off according to GTWorx and his add in the vendor section.
Unless ofcourse, GTworx is offering their own rates. EDIT: I called Eibach to ask about their ProStreet coilover setup and the front spring rate is 350 and the rear has NOT been developed yet. |
Originally Posted by BigT
(Post 7779951)
The Eibach coilover springsrates seem to be off according to GTWorx and his add in the vendor section.
Unless ofcourse, GTworx is offering their own rates. EDIT: I called Eibach to ask about their ProStreet coilover setup and the front spring rate is 350 and the rear has NOT been developed yet. I guess we will have to wait for final stats. |
Ok I spent some time doing a bit more research and found a good 5-6 more coilover setups available for the Evo X. If anyone knows of others including the high end setups feel free to post or PM me the details and I'll update the list. Some of the stats are still foggy such as height adjustment range and damping adjustments type but it should still give you a good start on what setups are out there.
Street price ranges are bound to change often so use those as a loose guide only to get an idea if they will fit into your budget. As is often the case, you get what you pay for! |
I just got off the phone with H&R USA and they said they don't release any spring rate numbers for the Sport Springs line. However, she said they are at least 20 to 25% stiffer than stock.
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Originally Posted by BigT
(Post 7887322)
I just got off the phone with H&R USA and they said they don't release any spring rate numbers for the Sport Springs line. However, she said they are at least 20 to 25% stiffer than stock.
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Updated the list with the different variants of BC Racing Coilovers, I also got a PM with quite a few more choices which I'll try to update on the list over the next few days once I verify the details. :beer:
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coltspeed springs for bilstein
Front: Lowers 30mm～35mm Spring rate：F2.7～5.0kgf/mm Rear: Lowers 15mm～20mm Spring rate：R2.3～5.0kgf/mm |
I'll check those out and update the list, thanks!
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Originally Posted by .RYAN
(Post 8084798)
No JRZ numbers?
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you need to edit that - endura-techs come 7k/5k from the factory, but can come with stiffer springs on request
thanks! |
Springs ...................... Front Rate ........ Rear Rate ...... Front/Rear Drop ...... Street Price
Swift Sport Mach ........ 2.7 - 4.3 kg ...... 2.3 - 4.4 kg .......... 1.0" / 0.6" ................. $350 Tein S-Tech .................... 4.2 kg ............... 3.8 kg ............... 1.4" / 1.0" ................ $220 Noob question, since the S-Techs have a higher spring rate. Does that mean it's a stiffer ride than the Swift Springs? |
The tein's do not have a higher spring rate, rather a steady rate where as the swift's are progressive. The swifts start off softer but can get stiffer than the tein's as the springs compresses. In other words, they are soft during cruising and hard when you hit the corners.
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The whole progressive spring thing is a bit hard to pin down. Basically on smooth roads the lower spring rates mean the factory shocks control the springs just fine, not that it's a challenge on a smooth road! On moderate bumpy roads the spring rates are probably slightly high for the shocks but within limits so it's mostly decent handling and response. Get onto a bumpy road and you get spikes of higher spring rates kicking in that are uncontrollable for several bounces by the stock shocks and you can get that bouncy feeling.
That's one of the major reasons I finally moved to coilovers since they have linear spring rates and adjustable shocks is much more predictable versus progressive springs and non-adjustable shocks. |
Interesting - Espelir ASD springs for the Evo X. Rear is lower than front - doesn't sound good right off the bat!
http://www.lancershop.com/customer/p...productid=2218 |
One more for the list!!!
Progress also makes springs for the Evo X http://www.evoxparts.com/evoxparts/P...-X-p-525.html# - Front drop: 1.2" (Front rate: 260 lbs/in) - Rear drop: 0.8" (Rear rate 230 lbs/in) I am guessing these are linear rates? |
Originally Posted by EvoIXMR
(Post 8249890)
Interesting - Espelir ASD springs for the Evo X. Rear is lower than front - doesn't sound good right off the bat!
http://www.lancershop.com/customer/p...productid=2218 anyway, the rep at lancershop didn't know why either...lol |
Originally Posted by Sol-Good
(Post 8250574)
i see that with the COBB springs they advertise on lancershop too...the drop in the rear is bigger than the front...i emailed the site and asked why b/c for most springs, it's the front that offers lower drop than rear (and that's how it should be)--right?
anyway, the rep at lancershop didn't know why either...lol |
Reducing the rake is better for high speed turns. Keeps it stable. For performance reduce the rake a little if possible.
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Blitz ZR
9kg front, 8kg rear single dual |
Swift Spec-R......5.3kg......5.3kg.......1.3/1.0..........350
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Someone posted pictures of Tein S-Techs for an Evo X and they were clearly progressives, so the chart is a tad misleading on these. And before you ask, no, I have no idea what the actual rates are.
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Ok guys I've been slacking over the last year but have learned quite a bit more in my travels when it comes to suspensions. I intend to update the charts and will give some basic suspension tips that will give you a good starting point for setting up a car that can handle turns as well as go in a straight line. :cool:
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Just an FYI, I have the Eibachs and they are lower than advertised I would say ~1.5"F/1.0"R
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Originally Posted by Bigstakk
(Post 9444829)
Just an FYI, I have the Eibachs and they are lower than advertised I would say ~1.5"F/1.0"R
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The spring rates posted for our springs is incorrect. They are 300 lbs/in front and rear, which is about 5.55 kg/mm
- andrew |
Originally Posted by GTWORX.com
(Post 9518522)
The spring rates posted for our springs is incorrect. They are 300 lbs/in front and rear, which is about 5.55 kg/mm
- andrew |
Side note- is the spring rate chart accurate...i noticed a few of them didn't seem right like the gtworx which my understanding they only drop it .8in F/R and the spring rates are not that stiff either...
Also, does anyone want to sell me their Works springs? |
to OP can you update your list with Progress spring. Top 2 spring for me GTWORX Tarmac and Progress.
GTWORX Tarmac ............ 5.5 kg ................ 5.5 kg ............. 1.2" / 1.0" ................. $299 Progress ........................ 4.6 kg ............... 4.1 kg .............. 1.2" / 0.8" ................. $190 GTWORX has a higher spring rate but can you fell it obviuosly compare to Progress? Progress is nice for that price. |
Originally Posted by Kryx
(Post 9982162)
OP do you want to add the swift spec r's? Lowers 1.25" F and 1" R, and 5.3kg F and 5.5kg R
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Originally Posted by Hiboost
(Post 10019429)
Just added and I also updated info on the Robispec and other KW coilovers out there.
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Sup guys, Any info on which springs come with the Tein Monoflex coilovers? Mine are making my teeth hurt since I hit 30 years old lol and I'm going to change the springs in hopes of taking the harshness down a notch.
Also, I found out that if your coil over set up has a camber plate then you have to lubricate the spherical bearing in the center of it or it will wear out eventually causing a horrible knocking/creaking metal on metal sound. Found this info on Maintenance and cleaning http://teinusa-blog.com/tein-damper-maintainence/ http://teinusa-blog.com/so-fresh-and-so-clean-clean/ |
Talked to Muellerized the other day and they told me their springs have a spring rate of 4.3kg (f)/4.4kg(r) in case the OP wants to update that on the chart
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Not sure if anyone posted Hotchkis spring info but here it is:
DROP: Front: 1.5" / Rear: 1.0" SPRING RATES: Front: 195 lb/in. / Rear: 275 lb/in. |
Info for Cusco Zero-1:
Spring Rates: F: 9kg/mm, 504lb/in R: 8kg/mm, 448b/in |
Originally Posted by Mforbes
(Post 10678110)
I am on the hunt for the best track worthy springs. I drive a GSR with stock suspension. A friend of mine that drives a 9 has the swift springs. I am wondering for the track if I should consider front/rear sway bar AND springs? I have heard that the X should be fine with just a rear sway bar upgrade. Input?
As far as track worthy springs you want a moderate drop and spring rate change that won't overwhelm the stock shocks. The real answer is a good set of coilovers in the $2000 range if you are serious. If you can only go with springs right now finding some Bilstein shocks from an MR owner coupled with the Swift springs seems like a well liked combo, plus you can get the shocks re-valved if you want to choose the more aggressive spring rates and drops to really dial it in. |
MR Bilsteins with GTWorx springs
I put on the GT Worx springs on my 2011 MR. The stocks shocks are seriously under damped with these springs and my car lurched and bounced around badly. The car is horrible at speed on a bumpy country road. The stock springs are better for the street IMHO.
At a smooth track where damping isn't critical I gained 4-5 seconds a lap (Watkins Glen). IMHO Don't put these springs on unless you revalve the shocks - I think you'll be disappointed otherwise because the back road agility and speed, the things that make the Evo great, is compromised. Revalve $120 ea = $480 Used bilsteins = $400 set springs = $350 Total $1230 A good 2 way adjustable Ohlins is $2300. Unless you have the bilsteins already it's not a good way to go. The revalved bilsteins will be a compromise, either too stiff for the street or to soft for the track. |
Who can revalve bisteins?
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Originally Posted by rg500nut
(Post 11371645)
Who can revalve bisteins?
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Please add us to your list, 8k/6k (Street) or 10k/8k (Track) 32 way adjustable Damping, single dual. $1,288
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DeltaVee for Bilstein revalve
1) I had the rear Bilsteins revalved by Rob at DeltaVee Motorsports in Kalamazoo, MI. Great service, 2 week turn around, about $110 each including guides?, seals and a dyno chart. Very pleased. The compression damping was doubled and the rebound damping quadrupled. The rear bounciness and floating was gone and the ride actually improved in the drivers seat. With the rear better controlled the front damping seemed weak
2) I rebuilt and revalved the fronts. Again, Rob at DeltaVee did a fantastic job. The front struts had much more damping from the factory, so based on spring rates and corner weights Rob only doubled the compression and rebound damping. |
For some reasons, the sort-of-new JRZ RS1 coilovers (single compression and rebound adjustability, 8 kg/mm(?) front & 9 kg/mm(?) rear for the Evo) are not listed in the chart. This is potentially a great street and entry-level track setup for those want to splurge. There is also a review (https://www.evolutionm.net/forums/ev...it-review.html) on this forum from 2012.
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Originally Posted by Lightsaber
(Post 11467829)
For some reasons, the sort-of-new JRZ RS1 coilovers (single compression and rebound adjustability, 8 kg/mm(?) front & 9 kg/mm(?) rear for the Evo) are not listed in the chart. This is potentially a great street and entry-level track setup for those want to splurge. There is also a review (https://www.evolutionm.net/forums/ev...it-review.html) on this forum from 2012.
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Originally Posted by Roen
(Post 11468229)
Service intervals and not having dust boots / bump stops limit this kit's street usefulness and push it more towards a track setup. You'd have to get those thinks added on afterwards.
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Pretty much. I mean you can street the JRZ, but you'll deal with decreased performance after awhile until you decide to rebuild them.
Other people have added dust boots and bump stops to the JRZs as well. I have a coilover setup that uses 3 party duty boots, luckily mine came with bump stops. |
What is a sprint rate?
http://www.vikingspeedshop.com/suspe...-spring-rates/ |
Hi Guys im new to this i really want to know..i changed my lancer 2008 front wheel bearings... and now my car display abs service?
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Hi guys,
I don't understand why we have gsr OEM SPRING rate, but we don't have the OEM COILOVER rate ? I thought it was 8 kg front/rear but I'm not able to confirm. Help please |
Bad vibration after 35 mph
Bought Megan Coilovers and had them installed on my 10 ralliart...We installed spacers too and this is happening around 35MPH and it gets worse the faster you go.
Facebook Post Any advice? |
Checking on coil spring fitment for Evo 8
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