S3 Long Life Forged Piston - Rieju MR300 (Manufacturer Ref: PI-963-B)
Designed for enduro and motocross, this S3 forged piston provides durability and longevity thanks to a high-quality aluminum-silicon alloy. Treated with molybdenum disulfide to reduce friction and equipped with nitrided steel rings, it features a finish engineered to withstand the demands of 300 cc engines.
Advantages:
- Very lightweight and strong — reduced inertia for a more responsive engine
- Anti-friction treatment to limit wall wear
- Forged design suitable for off-road conditions
- Vibration dampening for more controlled riding
The piston kit includes:
- 1 piston
- 2 rings
- 1 pin
- 2 circlips (C-clips)
Technical specifications:
- Diameter: Ø 71.95 mm (oversize +0.01, letter B)
- Compression: standard
- Material: forged aluminum (Al-Si alloy)
- Reference: PI-963-B
Compatibility (examples): Rieju MR300 and several 300 cc off-road models such as GAS GAS EC 300 Ranger, EC 300 Enduro GP, and EC 300 Racing Six Days. Check the diameter and oversize before installation to ensure proper engine fit.
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