Piston Kit Piston weight:324g

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 pin boss lighter.

Crankshaft Stroke 77.7mm

A thinner. harder, wear resistant high quality full counter crankshaft for 1200 HP. 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 for high cycle performance crankshafts. HKS craftsmen's uncompromising approach to design led to create a unique shape with high balance ratio and lower moment of inertia.

Connecting Rods

H-beam machined by nickel chromium steel (SNMC) Specially designed to fit thinner and shorter lightweight D22 pins. Increase fatigue strength by WPC treatment.