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ProX Piston Kit – 40.50 MM (+0.50 MM) – PW50


Your Price: $64.88

SKU: 01.2005.050

OEM Reference No: 18U-11631-00-A0


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ProX Piston Kits are comprehensive coming complete with: Piston / Ring Kit / Wrist Pin / Cir Clips. ProX also offers oversized piston options in order to follow manufaturer Piston to Cylinder Wall clearances. ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is used for all major Japanese engine manufacturers. ProX Piston Kits are a first class solution to replace the original piston in your Motorcycle, Scooter, Moped, ATV, Personal Watercraft, etc.!

  • ProX Piston Kits are comprehensive. Complete with: Piston / Ring Kit / Wrist Pin / Cir Clips
  • ProX also offers oversized piston options in order to follow manufaturer Piston to Cylinder Wall clearances
  • Precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy used for all major Japanese engine manufacturers
  • ProX Piston Kits are a first class solution to replace the original piston in your Motorcycle, Scooter, Moped, ATV, Personal Watercraft, etc
SKU: 01.2005.050 Categories: , ,

GTIN: 00193564273147

Product Market

Dirt Bike Parts

Bore Diameter

40.50 MM

Bore Diameter OEM

40.00 MM

Compression Height

20.00 MM

Material

Cast Piston

OEM Reference No

18U-11631-00-A0

Piston Boss Spacing

13.50 MM

Piston Head Type

Dome

Piston Oversize

0.50 MM

Skirt Coating

None

Wrist Pin Bore Diameter

10.00 MM

Years

2025
2024
2023
2022
2021
2020
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Makes

Yamaha

Models

MJ 50 Towny
PW 50