Naraku 63cc (42mm) Replacement Piston for SYM 4-Stroke faster Polini's 3G Maxi-Speed clutches have

Polini's 3G Maxi-Speed clutches have allen screws for adjusting preload on the clutch springs without having to remove the clutch from the engine

Bottom lever washer (SKU 97733)

Material: Heavy-Duty Waterproof Nylon

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Naraku 63cc (42mm) Replacement Piston for SYM 4-Stroke faster Polini's 3G Maxi-Speed clutches haveThis Naraku Piston Kit is compatible with engines running NK101. 65 (42mm) SYM 4T cylinders, including Genuine and CSC 50cc scooters and other 50cc 4T 139QMB bikes. Specifications: Piston Diameter: 42mm Wrist Pin Diameter: 10mm Includes piston rings and circlips Compatibility: Genuine Brio 50i Genuine Urbano 50i CSC Bella Classic 50 CSC go CSC go MAX CSC Nitro Sport 50 CSC Pug 50 139QMB based 50cc 80cc engines with the following engine codes: 139QMA