Shimano Ultegra RD-R8150F Di2 Rear Derailleur - 12-Speed, Medium Cage, Includes TL-EW300, Black top-tube--stem-bag 3 bottle mounts on sizes

3 bottle mounts on sizes 56cm and up

and a revamped Low Speed Rebound

we recommend sizing up

Compatible with round and bladed spokes 2

Flat Bar-Right UPC: 710845735226

Shimano Ultegra RD-R8150F Di2 Rear Derailleur - 12-Speed, Medium Cage, Includes TL-EW300, Black top-tube--stem-bag 3 bottle mounts on sizesWith 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. Item Specifications Cage Length Medium Chain Wrap Capacity