Yamaha Piston Kit - Size B Model:YZ250 the helmet is lined with

the helmet is lined with 360 ̊ turbines

even when wearing a helmet

Champions never stop

The seat area is made of 1800D material with multi-row reinforced stitching

Yamaha Piston Kit - Size B Model:YZ250 the helmet is lined withIn house designed and manufactured; all forgings are produced in Wssner's company owned forging operation 4 stroke pistons are made using a double bridged forging design Lightweight pistons with the tightest piston wall clearances in the industry give you a quieter running engine Standard and oversize pistons for most models, with high compression ratios available for 4 stroke applications All piston kits include piston, ring, wrist pin and pin locks