- **Organic VX Pads** are specifically designed to give the best performance under normal conditions. The organic compound gives improved noise reduction as well as increased ‘bite’. **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. **Compatibility** * Clarks CHM-05 * Tektro F10BS & F10XS * Shimano XTR * Shimano Ultegra BR-RS505 * Shimano Ultegra BR-RS805 * Shimano 105 * Shimano Dura-Ace * Shimano Ultegra * Shimano Tiagra * Shimano GRX