Manley Week at Slowboy Racing!!
Manley Week at Slowboy Racing!!

Slowboy Racing has been working very close with our friends at Manley for years! We are big fans of their product line and use them every day in our machine shop. Every day this week, we will feature a new product from Manley and help you better understand why we are such strong believers in the brand. Check out more great info!
We're going to kick the week off with the H Beam rods! This is our preferred H Beam connecting rod!

The H Beam rods are good to 600hp and offer excellent finish quality and consistency for weight, bend and twist. With a quality set of pistons, these rods can help provide for serious piece of mind with your high horsepower build!
We've got these H beam rods for most performance applications and we can offer you excellent pricing on this excellent part!
Check out this and over 50,000 other quality products on our new site at Welcome to Slowboy Racing !
PLATINUM SERIES LIGHTWEIGHT PISTONS

Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower. Round wire locks, tool steel wrist pins, and rings are included with every set at no additional charge.
We use these pistons on a daily basis and really love the product!
Check this and over 50,000 other performance products out on our new website at www.slowboyracing.com

Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower. Round wire locks, tool steel wrist pins, and rings are included with every set at no additional charge.
We use these pistons on a daily basis and really love the product!
Check this and over 50,000 other performance products out on our new website at www.slowboyracing.com
Manley offers great solutions for your valve train. Their spring and retainer kits offer great performance at a tremendous value!

Manley Pro Series Spring and Retainer Kits are matched sets perfect for your high revving Sport Compact.
Valve Springs
Manley Performance valve springs are specifically designed to withstand the rigors of today’s aftermarket Sport Compact camshafts and properly control the valve train in these high revving Sport Compact engine applications. This means utilizing only the best, super clean chrome silicon high tensile strength steel alloy and performing classified heat treatment and shot peen processing to insure the ultimate fatigue life and limit load loss.
Titanium Retainers
Manley titanium retainers are manufactured in the very best dual spindle CNC machines to exacting tolerances rendering a superior jewel-like finish. We use rugged and certified, heat treated aerospace grade titanium bar stock.
Retainer angles are held to within 6’ (minutes) (this is a tenth of a degree) and installed heights are held to within .005”!
Titanium retainers are a must for your high RPM Sport Compact engine. Their lighter mass allows the tuner to turn higher engine speeds and still avoid dangerous valve float; without sacrificing reliability.
We use these very parts in many of the race cylinder heads we build! We know the product and recommend it!
Check out this and over 50,000 other products on www.slowboyracing.com
REMEMBER, WE WON'T BE UNDERSOLD!

Manley Pro Series Spring and Retainer Kits are matched sets perfect for your high revving Sport Compact.
Valve Springs
Manley Performance valve springs are specifically designed to withstand the rigors of today’s aftermarket Sport Compact camshafts and properly control the valve train in these high revving Sport Compact engine applications. This means utilizing only the best, super clean chrome silicon high tensile strength steel alloy and performing classified heat treatment and shot peen processing to insure the ultimate fatigue life and limit load loss.
Titanium Retainers
Manley titanium retainers are manufactured in the very best dual spindle CNC machines to exacting tolerances rendering a superior jewel-like finish. We use rugged and certified, heat treated aerospace grade titanium bar stock.
Retainer angles are held to within 6’ (minutes) (this is a tenth of a degree) and installed heights are held to within .005”!
Titanium retainers are a must for your high RPM Sport Compact engine. Their lighter mass allows the tuner to turn higher engine speeds and still avoid dangerous valve float; without sacrificing reliability.
We use these very parts in many of the race cylinder heads we build! We know the product and recommend it!
Check out this and over 50,000 other products on www.slowboyracing.com
REMEMBER, WE WON'T BE UNDERSOLD!
Manley Race Series Valves are one of our best sellers and for good reason!!!

Manley Performance Sport Compact stainless steel valves utilize our exceptional “Race Series” alloy and are manufactured to the highest quality standards.
Manley valves are designed to outflow and outperform all others even in the most severe environments. Manley stainless valves feature gorgeous yet durable chrome stems, swirl polished under heads, fully hardened tips, completely machined combustion faces, closely controlled margin heights, and exact stem to seat concentricity to render a finished product that is unsurpassed.
Manley intake valves typically are built with our original “Pro-Flo” design which reduces the stem diameter in the fillet area for increased airflow but also less valve weight.
In certain specific applications, Manley offers our “Extreme Duty” exhaust material. Our “Extremealloy” alloy offers more hot hardness and high temperature strength than our competitors’ offerings. This alloy is ideal for extremely high boosted applications where the exhaust gas temperatures reach what seem like unthinkable levels.
Manley stainless valves are suitable for all applications ranging from the mild street performer to the jaw dropping 1000+ horsepower race cars competing at the drag strip or drifting events.
Paired with a set of Manley Valve Spring and Retainers, you can run some serious power and flow!!!
Thank you very much for your time. Check out these and over 50,000 other great products on our new site at Welcome to Slowboy Racing!
REMEMBER, WE WON'T BE UNDERSOLD!

Manley Performance Sport Compact stainless steel valves utilize our exceptional “Race Series” alloy and are manufactured to the highest quality standards.
Manley valves are designed to outflow and outperform all others even in the most severe environments. Manley stainless valves feature gorgeous yet durable chrome stems, swirl polished under heads, fully hardened tips, completely machined combustion faces, closely controlled margin heights, and exact stem to seat concentricity to render a finished product that is unsurpassed.
Manley intake valves typically are built with our original “Pro-Flo” design which reduces the stem diameter in the fillet area for increased airflow but also less valve weight.
In certain specific applications, Manley offers our “Extreme Duty” exhaust material. Our “Extremealloy” alloy offers more hot hardness and high temperature strength than our competitors’ offerings. This alloy is ideal for extremely high boosted applications where the exhaust gas temperatures reach what seem like unthinkable levels.
Manley stainless valves are suitable for all applications ranging from the mild street performer to the jaw dropping 1000+ horsepower race cars competing at the drag strip or drifting events.
Paired with a set of Manley Valve Spring and Retainers, you can run some serious power and flow!!!
Thank you very much for your time. Check out these and over 50,000 other great products on our new site at Welcome to Slowboy Racing!
REMEMBER, WE WON'T BE UNDERSOLD!
Slowboy Racing is very proud to announce the long awaited debut on the Manley
Forged and Billet crank shafts for the 4G63!!!!!
New Forged Crankshafts!!!

P/N: 190110 - 94mm (not avail until 2010) - NA
P/N: 190120 - 100mm - 37lbs
New Billet Crankshafts!!!

P/N: 190110B - 94mm - 36lbs
P/N: 190120B - 100mm - 38lbs
We will be rolling these out with great new rotating assemblies soon!!! OUR PRICING CANNOT BE BEAT ON THESE! We will be offering some amazing intro pricing on BALANCED crankshafts!!
Forged and Billet crank shafts for the 4G63!!!!!
New Forged Crankshafts!!!

- Premium heat treated forgings
- Special teardrop, diagonal oiling features not found on stock OEM style crankshaft.
- Better performance at High RPM
- Stress Relieved & Shot Peened
- Nitrided
- Magnafluxed
P/N: 190110 - 94mm (not avail until 2010) - NA
P/N: 190120 - 100mm - 37lbs
New Billet Crankshafts!!!

P/N: 190110B - 94mm - 36lbs
P/N: 190120B - 100mm - 38lbs
- 4340 Billet
- Multi-step heat treatment process
- Stress relieved and shot peened
- Nitrided
- Magnafluxed
- Knife Edged
REMEMBER, YOU HEARD IT HERE FIRST!
We will be rolling these out with great new rotating assemblies soon!!! OUR PRICING CANNOT BE BEAT ON THESE! We will be offering some amazing intro pricing on BALANCED crankshafts!!



