Shimano Ultegra Di2 RD-R8150 12-Speed Rear Derailleur Bike Accessories_ Pegs Reactive Stretch Technology (RST): thinner

Reactive Stretch Technology (RST): thinner 2mm neoprene paired with the most flexible jersey liner around the back and shoulders produce greater mobility and reach from the shoulders

With a contour cut around the edges

take off when the light turns green and clip in with ease

CNC machined aluminum dispenser with brass internals

the E-118 Tri+ combines the razor-sharp handling and aerodynamic performance of a TT champion with tri-specific fit and functionality

Shimano Ultegra Di2 RD-R8150 12-Speed Rear Derailleur Bike Accessories_ Pegs Reactive Stretch Technology (RST): thinnerCAGE LENGTH One Spec TOTAL CAPACITY 39T MAX FRONT DIFFERENCE 16 COLOR SERIES COLOR AVERAGE WEIGHT 262g MOUNT Direct attachment (conventional) NUMBER OF PULLEY TEETH 11 SERIES Ultegra GENERATION R8100 MAX LOW SPROCKET 34T MIN LOW SPROCKET 28T REAR SPEEDS 12