GRX ST-RX600 BR-RX400 Disc Brake Set Style:Rear 11 Spd. Smart sensor technology senses motion

Smart sensor technology senses motion and automatically turns Vya on when inserted into mount and will remain on

moving your centre of bouyancy lower

Ultra low-profile design

provides effortless power

J-Kit (Easy Hose Joint System)

GRX ST-RX600 BR-RX400 Disc Brake Set Style:Rear 11 Spd. Smart sensor technology senses motionInstead of telling gravel riders what they needed, Shimano asked them what they wanted for their off road adventures. The result are the Shimano GRX components which represent the first series especially developed for riding on rough roads and through gravel. The Shimano GRX sets itself apart from the rest of the component world with its gravel specific ergonomics, optimized gearing options, rugged reliability as well as a quiet and stable drivetrain.