SunRace RD-M57 7/8-Speed Rear Derailleur Shimano Compatible bike accessories brand_Finish Line But carbon fiber is like

But carbon fiber is like tomato sauce

Hardened CRV tool steel maintains precise contact edges

Shimano Ultegra ST-R8025 2x11sp

Sound-proof inner padding maintains a noiseless ride

The semi-opaque structure and lightness of the AirFit fabric provide comfort

SunRace RD-M57 7/8-Speed Rear Derailleur Shimano Compatible bike accessories brand_Finish Line But carbon fiber is like7 8 speed MTB rear derailleur Engineered polymer and steel construction Not compatible with Shimano MegaRange cassettes SHIMANO Equivalent RD M360 RD M410 RD M310 RD M280 Removable hanger included for use with direct mount or hanger mount Model: M57 Speed: 7 8sp Max: 34 Wrap: 43 Cage Mount: Long Ratio: 2to1 Color: BLK Wgt: 354g