KB PERFORMANCE Piston Kit - FX/FL KB263.030

If you're building a high-performance engine that demands precision and reliability, KB Performance pistons are engineered to deliver both. These diamond-machined pistons maintain exceptionally tight tolerances—plus or minus one gram weight variance and less than half a thousandth-inch consistency—enabling a tighter fit that reduces piston rock, improves ring seal, and extends component life. Whether you're rebuilding a classic FX/FL or pushing power limits, KB's 390 hypereutectic aluminum alloy construction handles sustained heat and pressure while maintaining dimensional stability across thousands of combustion cycles.

Technical Specifications:

• Material: T-5 heat-treated 390 hypereutectic aluminum
• Weight tolerance: ±1 gram
• Dimensional tolerance: ±.0005 inches
• Diamond-machined construction
• Kit includes: Two pistons
• Included pin type: Spiral-lock clips
• Ring package: Hastings moly rings
• Installation: Requires professional assembly guidance
• Fitment: FX/FL specific
• MPN: KB263.030
• Separate ring/clip kits available

Important: Consult included instructions for proper piston clearance and top ring end gap specifications to ensure optimal performance and longevity.