Description
Worn or damaged pistons compromise engine efficiency, power delivery, and long-term reliability—especially under racing conditions or high-mileage operation. The PROX Piston Kit 01.1338.B restores your engine to OEM specification with precision-engineered components manufactured to exacting tolerances. This complete kit eliminates guesswork and ensures proper ring sealing, reduced blow-by, and consistent combustion chamber performance.
PROX pistons are cast from high-silicon-content aluminum alloy formulated to meet or exceed original equipment specifications, then CNC-machined to extremely close tolerances for perfect bore fit. Every kit arrives ready to install with all necessary components—no sourcing individual parts or guessing on compatibility.
- OEM replacement specification
- High-silicon aluminum alloy
- CNC-machined tolerances
- Complete kit package
- Includes rings
- Includes wrist pins
- Includes circlips
- Manufactured in Japan
- Direct bolt-in installation
- Meets OEM performance standards









