SRAM's strongest DH derailleur available. Period. Utilizing the SRAM Full-Mount design the XX DH Transmission Derailleur takes the same robust architecture as their other Transmission derailleurs and delivers an even more robust DH-focused design ready for World Cup start huts or the gnarliest freeride lines. And just like T-Type the derailleur and cassette are designed to work in lockstep using Cassette Mapping to deliver constant chain engagement for uninterrupted power transfer. Meaning you can shift when and where you want whether it's the start ramp or sprinting full gas to the line.Hangerless Interface and Full Mount attachment allow for the most precise shifting and the ultimate resistance to impactInstalls and pairs via the reliable and familiar standard AXS set-up and pairing procedureReplaceable skid plates outer parallelogram link and rebuildable thread-on cage assemblyType 4 damper results in very quiet operation through the roughest tracksT-Type chain compatibility only (Sold separately)