KB PERFORMANCE Piston Kit KB266.030.3

If you're building or rebuilding a high-performance engine, piston quality directly impacts ring seal, combustion efficiency, and long-term durability. KB Performance pistons are diamond-machined to extraordinarily tight tolerances—allowing you to run closer clearances than conventional pistons, which means less piston rock, superior ring seal, and extended service life. When precision matters, KB delivers the consistency that separates professional builds from the rest.

Technical Specifications:

• Material: T-5 hypereutectic aluminum
• Heat-treated for strength
• Diamond-machined construction
• Weight tolerance: ±1 gram
• Dimensional tolerance: ±0.0005"
• Allows tighter piston fit
• Reduces piston rock
• Improves ring seal performance
• Kit includes: 2 pistons
• Includes piston pins
• Includes spiral-lock pin clips
• Includes Hastings moly rings
• Separate replacement rings available
• Separate replacement clips available
• Requires proper ring end-gap setup
• Installation: Professional fabrication recommended
• MPN: KB266.030