Yup should be bolt on, my Endless 6POT kit with 345mm discs fitted fine

 

Ive been looking at the endless kits but it’s hard to decipher the Japanese descriptions
Do they have anything comparable to AP Radical or the like?

 

yea, but BITOG seems on the whole actually on board with this oil, and the cleaning properties seem legit. We have port injection anyway so this should about clean everything. Thinking to run it during the off season only - during the season I'll run zrod, redline racing oil, or vr1 racing oil, whatever I can get my hands on most easily - they all seem to be similar.

Nice - I actually am a fan of the alcons, just need to decide between 343 and 355 - prob 355 even though I'll have to sacrifice my 17s again.

 

why not just get AP?

 

Cuz almost 6k 🤷‍♂️

 

I did find the US Endless site, pricing is insane, even more than the Essex kits for seemingly less “Motorsport” calipers.
What does look comparable is in the 8k range…

 

You gotta buy Endless products directly from Japan. RHDJapan.com is a great site. I got their coilover line directly from japan and was about $1200 cheaper, with shipping, than purchasing in the US.

 

Yeah. But you can't compare most brake kits to an AP or Brembo motorsports setup. They're expensive because they truly are the best.

 

This is true, its great for the average commuter car but I wouldn't recommend it for your evo long term. If you think BITOG loves Restore & Protect you should see how the whole board drools and fanboys over HPL, and rightfully so. Seems half the posts on the board are discussing HPL lol. The HPL data and transparency from the owner has convinced me too and now I wont put anything but HPL in my engines (coming from a Redline fanboy).

 

They are expensive but if you want to track extended sessions why mess with anything else?

imo do the evo X kit with giro disc, AP, or leave stock.

 

Well I had Evo X, now have craptech “trophy” front and rear but still not happy.
Have AP’s on my C7z so I know what it’s like and I know it’s the best, just don’t track the Evo enough to justify the cost.

 

Send me a PM, I can decifer anything you want.
Endless EC670 6POT is their 2-piece caliper, it's a good quality unit and what i'm running on my car. Pedal feel is so much better than 20+ year old Brembo's.
If you want better than Radical Pro5000R calipers, then RacingMONO6 calipers are the way to go from Endless.

Depending on what you're doing, disc weight and annulus is more important that diameter.
The factory Evo 5-9 Brembos are 320mm with 61mm annulus. The Evo X is 350mm with 61mm annulus. So there is good surface area and disc weight.
If you go to an Alcon or whatever, it's likely the annulus will be 54mm or smaller.
So just make sure you get the right kit for your application.

 

i didn't realize the annulus mattered, i thought it was just the torque arm of the brake (bigger rotor more brake) and the pad, as long as the pad fully touches the surface of the rotor, how does annulus play a role in braking?

genuinely interested/wondering.

 

there are multiple factors...

annulus determines the height of the pad and with with pad length you get larger pad area. Larger pad will handle temp better, and provide longer life...

But, there is also a question of disc mass, which will determine how high are the changes in temp during braking, and you do not want those temps to spike too much. Then there is the disc gap... wider the gap, better cooling... smaller gap, with same disc width, more disc mass, and more temp stability (dont want those brakes to cool too much on the straights)...

Ideally, you adapt the brakes to the application and track.... For example, the grN brakes are 355mm with quite heavy discs, which is probably a result of the rally drivers stomping on their brakes all the time, but not having excessively long brake zones...

edited in: it is not really about the force and lever... more about the capacity of the system to transform kinetic energy into heat and transfer it to the air without getting the main parts too hot which will result in friction coefficient to drop and the driver will feel it as loosing brake performance...

 

yea very good points, no arguments here. I guess the only thing I would say is that usually those sorts of things (stability, etc, etc, etc.) go hand in hand with increasing the size and mass of the rotors, though I see what you mean by the annulus area helping, among other things, it will be a better heat sink as well.

I'm on the tiny ap racing brakes right now with ~325mm rotors. It's been a decrease in braking force compared to the Evo 10 setup I used to run, but benefits in other ways of course. I guess I'm just hoping to capture some of that back without "braking" the bank.