ProX Piston Kit, 2-Stroke, 40.75 MM (+0.75 MM)
ProX Racing Parts Piston Kit PW50 '81-21 (40.75mm).
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.!
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WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and/or harm. For more information, go to www.P65Warnings.ca.gov
|Bore Diameter (OEM)||40.00|
|OEM Reference No||18U-11631-00-A0|
|Piston Boss Spacing||13.50|
|Piston Head Type||Dome|
|Product Types||Piston Kits|
|Wrist Pin Bore Diameter||10.00|
|1981 - 2009||YAMAHA||PW50|
|2012 - 2021||YAMAHA||PW50|