The KB Pistons Super Duty series offers high-performance pistons designed for demanding engine rebuilds and modifications. These pistons feature an anodized top ring groove and crown, providing enhanced durability and corrosion resistance under rigorous operating conditions. The Line2Line abradable skirt coating, applied at a total thickness of .003 inches, ensures a zero initial fit, allowing the coating to hone in for a tight, quiet running clearance, which helps reduce engine noise and improve longevity. The round wire locks contribute to secure ring positioning, maintaining optimal sealing during engine operation. Equipped with premium Hastings 1.2mm steel nitride top rings and a ductile Napier second ring, these pistons deliver excellent sealing and reduced blow-by, supporting improved compression and power output. Forced wrist pin oiling ensures reliable lubrication, reducing wear on critical components and extending engine life. Designed for M8 versions with a flat top and a 1.2cc combustion chamber, these pistons have a compression height of 1.083 inches and feature valve pockets that are sized to accommodate 1mm oversize valves, making them suitable for high-performance engine builds. Each piston set includes all necessary rings, wrist pins, and wrist pin locks, providing a complete rebuild kit. Sold as a pair, these pistons are ideal for engines with bore sizes around 4.250 inches, supporting compression ratios up to 11.7:1 for increased horsepower and efficiency. Crafted by KB Pistons, renowned for quality and performance, these pistons are suitable for engine applications requiring precise fit and durability in high-stress environments.
Features:
- Anodized top ring groove and crown for durability
- Line2Line abradable skirt coating at .003 inches for a tight, quiet fit
- Round wire locks for secure ring placement
- Premium Hastings 1.2mm steel nitride top rings and ductile Napier second ring for optimal sealing
- Forced wrist pin oiling for enhanced lubrication and longevity
- Designed for M8 flat top version with 1.2cc combustion chamber and valve pockets for 1mm oversize valves
- Includes all rings, wrist pins, and wrist pin locks for complete assembly
- Sold as a pair, suitable for engines with approximately 4.250 inch bore
