Capacity Upgrade Kit by HKS

The most durable stroker kit with an improved response for serious customers, capable of handling up to 1200hp.

Features

• Piston Kit:
• Made of highly heat resistant and durable A2628 alloy
• Machined to reduce excess thickness parts to achieve ultra-lightweight
• Adapting truss structure for improved structural rigidity
• Double-layer molybdenum coating to reduce friction and improve initial fit-in
• Using D22 piston pin instead of D21 to increase flexural rigidity yet achieving the same weight by making the pin itself thinner and shorter in length
• The shortened piston pin makes the pin boss lighter
• Crankshaft:
• A thinner, harder, wear-resistant high-quality full counter crankshaft for 1200hp
• Material is high-end racing-grade nitriding steel/EN40B (BS722M24) for serious customers
• The same ion plasma nitriding treatment used in high-quality racing cranks is applied for 50 hours to increase the surface strength and toughness required of high cycle performance crankshafts
• HKS craftsmen's uncompromising approach to design led to creating a unique shape with a high balance ratio and lower moment of inertia
• Connecting Rods:
• H-beam machined by nickel-chromium steel
• Specially designed to fit thinner and shorter lightweight D22 pins
• Increase fatigue strength by WPC treatment

Benefits

• Improved Reliability
• Improved Performance
• Increased Horsepower Capacity