SunRace RD-M37 6/7-Speed Rear Derailleur Shimano Compatible Apparel Brand_Swiftwick R4 carbon injected nylon outsole:

R4 carbon injected nylon outsole: moderately stiff for efficient power transfer in comfort

The Wahoo RPM cadence sensor is your sleek little solution for measuring cycling cadence data

It is the world's first 100% synthetic kinesiology tape

5" wide and without tread

Compatible with all forward and double bridge fork designs

SunRace RD-M37 6/7-Speed Rear Derailleur Shimano Compatible Apparel Brand_Swiftwick R4 carbon injected nylon outsole:6 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