Parts & Accessories for off-road motorcycles and Quads

Piston Prox Derbi Senda

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.

Size: 39.85mm Select below from all available options
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Bore - Actual 39.90 mm
Bore - Standard 39.90 mm
Bore - Oversize STD N/A
Compression Height 18.00 mm
Dome Type Dome N/A
Piston Pin Hole Diameter 12.00 mm
Skirt Coating - N/A
Piston Size 39.85 mm
Total Height 49.00 mm
Country of Origin Japan N/A
Boss Space In 16.00 mm
Ring Locating Pin (E) 9.00 mm
Ring Locating Pin (F) 9.00 mm