Shock Absorber Revalve Assembly (50.00x12.00mm) WP ENDURO The K-Tech ORVS for WP Shock Absorbers uses a higher flowing four port piston to eliminate harshness. The piston is supplied with a shim stack for a wide range of rider abilities backed up with a setting bank allowing it to be tuned for different abilities and terrains. A low friction piston band is supplied to lower the friction in the shock absorber enhancing damping stability over demanding racing conditions It is recommended that this product is fitted by a professional suspension company as there are specialist tools and skills required to guarantee safety and performance from the product