Ultegra RD-R8150 Di2 12-Speed Rear Derailleur Options:Ultegra RD-R8150E Di2 Rear Derailleur - 12-Speed, Medium Cage, Includes TL-EW300, Black Approximate weight: 300g (1/2 pair

Approximate weight: 300g (1/2 pair

350 lumens packed into a compact form

DT Swiss Industry 2

The Joker 6003 with its smart mouth geometry significantly expands the range of uses in confined spaces

This design achieved the ideal balance of foam padding with ergonomic relief channel

Ultegra RD-R8150 Di2 12-Speed Rear Derailleur Options:Ultegra RD-R8150E Di2 Rear Derailleur - 12-Speed, Medium Cage, Includes TL-EW300, Black Approximate weight: 300g (1/2 pairWith the fast and accurate Di2 shifting technology, the Shimano 12 speed Ultegra RD R8150 rear derailleur is extremely versatile thanks to a single cage length option compatible with 11 28, 11 30, and 11 34 cassettes. Compact design includes an integrated wireless unit, charger, switch Wider range capacity Max. low sprocket 34t LED status indicator Battery indicator, pairing, adjust mode etc.