In-house designed and manufactured; all forgings are produced in Woessner�s company-owned forging operation, Oversize pistons available for all makes and models, All skirts supplied with Moly coating to reduce friction and assist in break in, Lightweight pistons and tightest piston-to-wall clearances in the industry results in quieter running engines, All piston kits include piston, ring, wrist pin and pin locks, W�ssner piston kits are used by leading Supercross, Arenacross and MX GP teams