NEW Shimano 105 RD-R7150 Di2 Rear Derailleur - 12-Speed, For 2x12 Speed, Direct Mount, Black type_derailleurs-front Compatible with both road and

Compatible with both road and mountain bike brakes

adding a rack and fenders for commuting on 32’s or exploring the backcountry wilderness fully loaded up on 37mm rubber

Cassette: Shimano HG700 11–34t

use a 10-speed chain

NEW Shimano 105 RD-R7150 Di2 Rear Derailleur - 12-Speed, For 2x12 Speed, Direct Mount, Black type_derailleurs-front Compatible with both road andThe Shimano 105 RD R7150 Di2 12 speed rear derailleur completes a shift in the blink of an eye with its high performance motor and optimized link structure. This is the hub of the Shimano Di2 system, with the charging port, indicator LEDs, adjustment switches and more integrated into a compact package. Low profile Shimano Shadow RD design reduces damage from contact and falls Receive the wireless shifting signal from the shift lever Check the battery