KB PERFORMANCE Piston Kit KB297.010

KB Performance pistons are engineered for racers and builders who demand tight tolerances and consistent performance across multiple heat cycles. The T-5 hypereutectic aluminum construction allows for a tighter piston-to-wall fit than standard offerings, reducing piston rock and improving ring seal—critical factors in high-RPM stability and longevity. Each piston in this kit is diamond-machined to within ±1 gram and 0.0005" tolerances, ensuring predictable behavior whether you're running a naturally aspirated or forced-induction application.

This kit includes everything needed for installation: two pistons, wrist pins, spiral-lock clips, and Hastings moly rings. KB's design philosophy prioritizes thermal conductivity, but this requires attention to proper ring end gap and piston clearance during installation—follow the included documentation carefully for optimal results.

• Material: T-5 hypereutectic aluminum
• Heat-treated for durability
• Weight tolerance: ±1 gram
• Machining tolerance: 0.0005"
• Diamond-machined finish
• Allows tighter piston fit
• Reduces piston rock
• Improves ring seal
• Includes wrist pins
• Includes spiral-lock clips
• Includes Hastings moly rings
• Bolt-on installation
• Replacement rings available separately
• MPN: KB297.010