SunRace RD-M37 6/7-Speed Rear Derailleur Shimano Compatible Apparel Brand_Swiftwick Compatible with all forward and

Compatible with all forward and double bridge fork designs

wicks away sweat

LOOK spindles are only approved after a rotational test of 2 million cycles at 100tr/min with a load of 90kg on the center of the pedal and an eccentric rotation (creating a shock on each rotation)

Cam style quick release

SunRace RD-M37 6/7-Speed Rear Derailleur Shimano Compatible Apparel Brand_Swiftwick Compatible with all forward and6 7 speed MTB rear derailleur Engineered polymer and steel construction Direct mount with optional hanger included SHIMANO Equivalent RD TY21 RD A070 Speed: 7sp Max: 30 Wrap: 37 Cage Mount: Mid Ratio: 2to1 Color: BLK Wgt: 265g