Parts & Accessories for off-road motorcycles and Quads

Piston Prox Hydrospace S4 05-08 9.0:1

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: 84.94mm Select below from all available options
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Bore - Standard 85.00 mm
Compression Height 16.00 mm
Dome Type Flat with hollow N/A
Piston Pin Hole Diameter 21.00 mm
Skirt Coating - N/A
Piston Size 84.94 mm
OEM Reference No HSR00-05-01-130 N/A
Total Height 41.50 mm
Country of Origin USA N/A
Boss Space In 26.80 mm