The TRP RD-M9050 EVO 12 rear derailleur represents the pinnacle of mechanical shifting performance for mountain bike riders. Built around TRP's advanced Hall Lock technology, instant silent clutch, and quick-release cage mechanism, this 12-speed derailleur delivers whisper-quiet operation and precise shifting across the full cassette range. The carbon fibre outer cage and sealed bearing pulleys ensure lightweight durability for enduro, trail, and all-mountain riding. Features Integrated Hall Lock lever eliminates unwanted drivetrain noise with adjustable clamping force Horizontal parallelogram stabilises the derailleur over rough terrain Instant, silent clutch prevents chain slap for a quiet, efficient drivetrain Cage release mechanism for quick and easy wheel removal and maintenance Carbon fibre outer cage for lightweight rigidity 12T/14T sealed bearing pulleys for smooth, low-friction performance Specifications Speed: 12-speed Cage Material: Carbon fibre outer cage Pulley Sizes: 12T / 14T sealed bearing Weight: 300g