Description
When your Beta RR250 or Xtrainer 250 demands a fresh top-end rebuild, settling for substandard pistons compromises both reliability and performance. This PROX piston kit delivers OEM-quality engineering with precision CNC-machining and high-silicon aluminum construction—ensuring consistent ring sealing, proper heat dissipation, and longevity through demanding trail and competition riding. As a complete bolt-in solution, you get everything needed for a professional-grade refresh without sourcing multiple components.
- Bore diameter: 66.34 mm
- OEM-replacement fitment
- High-silicon aluminum alloy
- CNC-machined tolerances
- Japanese manufacturing
- Includes piston assembly
- Ring kit included
- Wrist pin included
- Circlips included
- MPN: 01.7313.A
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