PISTON KIT 50cc 40.30mm, PROX 01.1010.130 Minarelli AM6
This ProX piston kit features a 40.30mm bore, which is an oversize (+1.30mm) two-stroke replacement piston. It is manufactured from a low-expansion, low-friction alloy used by OEM engine manufacturers, offering high durability and reliability. The kit includes the piston, rings, circlips, and gudgeon pin. The little end bearing must be purchased separately. Cylinder clearance should be verified before installation. Specifications include a 40.30mm bore, +1.30mm oversize, and it is for a 2-stroke engine. Cross-reference numbers are GW0 and GW2.
- SKU
- 56-W9850.130.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (1)
FULL DESCRIPTION
ProX 50cc Oversize Piston Kit 40.30mm
This ProX piston kit features a 40.30mm bore, making it an oversized (+1.30mm) replacement piston designed for two-stroke engines found in many small-capacity motorcycles and scooters. It is constructed from a high-quality, low-expansion, low-friction alloy that is also used by Original Equipment Manufacturer (OEM) engine builders, ensuring excellent durability and reliability at a competitive price point. This kit provides an economical solution for replacing worn or damaged OEM pistons.
Key Features:
- Constructed from OEM-grade low-expansion, low-friction alloy for superior performance.
- Engineered for high durability and thermal stability, ideal for demanding two-stroke applications.
- Complete kit includes the piston, piston rings, circlips, and gudgeon pin for a straightforward installation.
- Offers an economical and reliable alternative to original equipment pistons.
- Important Note: The little end bearing is not included in this kit and must be purchased separately.
- Important Note: Always verify and set the correct cylinder clearance before installing this piston.
Specifications:
- Bore Size: 40.30mm (This is a +1.30mm oversize piston)
- Engine Type: 2-Stroke
- Cross-Reference Numbers: GW0 / GW2


