Wossner Piston Yamaha YZ426F 00-02Wossner For more than 35 years, Wssner successfully design and produce high performance pistons and connecting rods. In order to offer their customers the best of Wssner Power, their products are produced by using state of the art technology and are subject to continuous quality control. Performance, quality and longevity this is what Wssner stands for with high quality products. Piston Kits Wssner pistons are supplied with the appropriate piston