Shimano Ultegra RD-R8150 Di2 12 Speed Rear Derailleur Bikesportz Masterpiece posts weigh approximately 40

Masterpiece posts weigh approximately 40 grams less than the same size Elite post

These four properties had to be brought together in the development of MCFK's new carbon road handlebars

if preferred

Bottom Bracket Shell Width: 68mm - 73mm

3x pairs of rubber fittings

Shimano Ultegra RD-R8150 Di2 12 Speed Rear Derailleur Bikesportz Masterpiece posts weigh approximately 40Now simplified with a single derailleur cage length, the Shimano Ultegra RD R8150 Di2 12 Speed Rear Derailleur packs Shimano's fastest, most precise shifting into a more approachable option. The single cage length is compatible with up to 34T low sprockets, making it more versatile than ever. Specifications Fastest ever rear shifting 58% faster than RD R9150 Compact design includes an integrated wireless unit, charger and switch LED status indicator