Clarks Organic Disc Brake Pads For Avid Code 2011 OnwardsOrganic VX Pads are specifically designed to give the best performance under normal conditions. The organic compound gives improved noise reduction as well as increased âbiteâ.Sintered VRX Pads are a harder compound pad with increased carbon content. Sintered pads are designed to deliver maximum performance under stress and extreme conditions. Consistent through sustained riding they are ideal for hydraulic brake systems.Competition VRS Pads are specifically engineered for competition riding: with an advanced pad compound comprising of Kevlar for high frictional properties high ceramic content for improved wet weather performance and a increased copper content for superior low speed braking characteristics. In addition a 'grooved' backing plate improves the airflow between the piston and the pad keeping the brake system cooler and performance consistent.CompatibilityAvid Code RAvid Code 2011+Shimano XT M755Shimano XT M756