Ultegra RX, GS 11 Spd. Di2 GRX Shock Absorber system between the

Shock Absorber system between the shell and rail reduces road shock and vibration

V-Matrix Technology creates larger sweet spot for increased power

the ISOMETRICTM design increases the sweet spot by 7%*

Shimano Deore XT quality to complete your 1x11 speed drivetrain

Power Glide technologyHeat treated steelWeight: 229g for 11-26TCompatibility: PC-1170

Ultegra RX, GS 11 Spd. Di2 GRX Shock Absorber system between theWith an integrated chain stabilizer mechanism, the ULTEGRA RX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON OFF switch for the chain tensioner. The RD RX805 DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting. CAGE LENGTH: GS Medium TOTAL CAPACITY: 39T MAX FRONT DIFFERENCE: 16 AVERAGE WEIGHT: 280g