ProX Piston Kit 94.95mm Yamaha YFZ450/YFZ450R | 01.2436.A XL80 Drastically improved throttle response throughout

Drastically improved throttle response throughout the whole RPM range

Get SuperATV's Rev1 Clutch Kit for better performance that matches your ride style on top of better engagement regardless of your UTV's upgrades

If running a lift kit with these A-arms plus stock wheels in the rear

They're bigger and stronger than your OEM arms

and a full-length rubber seal keeps the wind out and prevents leaking

ProX Piston Kit 94.95mm Yamaha YFZ450/YFZ450R | 01.2436.A XL80 Drastically improved throttle response throughoutKit includes piston, rings, wrist pin and circlips Precision machined on state of the art CNC equipment Made with low expansion, low friction alloy