Shimano Ultegra RX 800 Rear Derailleur

With the diversification of road cycling and the growth of gravel and multi-surface riding, Shimano introduces Ultegra RX, rear clutch derailleurs that further the versatility of the Ultegra R8000 drivetrain a Chain Stabilizer mechanism adopted from mountain bike design adapted and tuned for road drivetrains and riding conditions a ON/OFF switch a Precise accurate shifting a Compatible with current road DUAL CONTROL LEVER a Shimano Shadow RD Plus technology a Mount: Direct attachment (conventional) a Speeds: 11 a Max. front difference: 16T a Total Capacity: 39T a Low Sprocket Min/Max: 28T/34T a Top Sprocket Min/Max: 11T/11T a Weight: 248g. a Color: Black