- **Fitment**: Tektro Lyra Mechanical (MD-C500) **Green Pads** * Designed for X-country riding * Softer pad compound for better stopping * Can be used on non-hardened or hardened discs * This is a RESIN pad For cross country riding this is your best choice and is a British made organic pad compound that will not damage your discs. The pads have a medium lifetime and most types are supplied with slightly beefed up retraction springs to prevent pad drag.