NEW Shimano Ultegra RD-R8150 Di2 Rear Derailleur - 12-Speed variant-size-43 Knurled tread with siping provides

Knurled tread with siping provides great traction for braking and cornering

The design has been streamlined to provide more rear-tire clearance

ISO Width (mm): 37

Soft-touch cover

NEW Shimano Ultegra RD-R8150 Di2 Rear Derailleur - 12-Speed variant-size-43 Knurled tread with siping providesWith 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. Cage Length Medium Chain Wrap Capacity (teeth) 39 Color