S3 Long Life Forged Piston kitRef : SPART00068A / 1117810003

S3 Long Life Forged Piston - Ref. PI-963-C

Designed for 300 cc cross machines, this S3 Long Life piston made from aluminum-silicon alloy is forged to provide a compact structure that withstands high RPM demands. Its molybdenum disulfide treatment reduces surface friction, while the nitrided steel rings enhance sealing and durability.

• Material: forged aluminum-silicon alloy
• Treatment: molybdenum disulfide coating / nitrided steel rings
• Compression: standard
• Diameter: Ø 71.96 mm (oversize C +0.02)
• Manufacturer reference: PI-963-C

The forged design prioritizes lightness and strength against the thermal and mechanical stresses of off-road riding. This piston is aimed at riders seeking a reliable assembly part to maintain a responsive engine performance while minimizing vibrations felt at the handlebars, without altering the original compression settings.

Kit contents:

• 1 piston
• 2 rings
• 1 pin
• 2 circlips

Intended for the Rieju MR300, it is also suitable for 300 cc engines such as the GAS GAS EC 300 (Ranger, Enduro GP, Racing Six Days) — please check the precise compatibility with your model before installation.