Description
If you’re building or rebuilding an engine that demands precision and longevity, KB Performance pistons deliver the tight tolerances and superior ring seal that separate a reliable build from a mediocre one. The 390 hypereutectic aluminum alloy construction handles extreme temperatures and cylinder pressures while maintaining dimensional stability, and the diamond-machined accuracy means less piston rock and better combustion efficiency across the RPM range. Whether you’re a professional engine builder or a serious DIY enthusiast, these pistons reward proper installation with extended service life and predictable performance.
- Material: T-5 heat-treated 390 hypereutectic aluminum
- Weight tolerance: ±1 gram across kit
- Machining precision: ±0.0005 inches piston-to-piston
- Kit includes: Two pistons, pins, spiral-lock clips
- Rings: Hastings moly-coated included
- Installation: Bolt-on replacement, standard clearance required
- Allows tighter bore fit than standard pistons
- Reduced piston rock, improved ring seal
- Optional: Separate ring and clip kits available
- Fitment: Engine-specific—verify application before ordering
- Special attention: Follow included instructions for ring end gap and piston clearance specifications
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