DRI stocks a complete line of PROX Piston kits for the following 2-Stroke ATV's. Some model sizes have been discontinued-
Call DR for availability.
DR also offers In-House Cylinder Boring/Honing-Quick Turn Around

Models Available:
Honda 85-86 ATC 250R, 86 TRX 250R
Honda 87-89 TRX 250R
Yamaha Banshee
Yamaha Blaster

Also available for popular 2-Stroke Motorcycles

Piston kits are supplied with: Piston, Rings ,Pin, Clips
*Top End Bearing NOT INCLUDED

DRI has used ProX pistons to win hundreds of races worldwide.

ProX quality is equal to or better than OEM stock

ProX pistons are of a cast design Made in Japan and are recommended over forged design in most 2-Stroke ATV's

Sizes: Generally STD thru 8th over in .25mm increments

See Price List for complete list of sizes and part numbers.