Description
Your engine’s piston kit is the foundation of reliable power delivery and longevity under load. Factory pistons wear, lose compression, and compromise performance—the PROX Piston Kit 01.4221.B restores OEM-specification durability with precision-engineered components built to withstand serious racing and high-mileage applications. This complete kit eliminates the guesswork of sourcing individual components separately.
PROX engineered this piston set in Japan using a high-silicon aluminum alloy that meets or exceeds OEM tolerances, then CNC-machined each piece to extremely close specifications. You get pistons, rings, wrist pins, and circlips in one package—everything needed for a complete, reliable rebuild.
- Manufactured in Japan
- OEM replacement specification
- High-silicon aluminum alloy
- CNC-machined tolerances
- Complete kit included
- Pistons + rings
- Wrist pins supplied
- Circlips included
- Bolt-on installation ready
- MPN: 01.4221.B
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