Shimano Ultegra RD-R8150 Di2 12 Speed Rear Derailleur SOFTGOODS 12mm Thru-Axle Compatible

12mm Thru-Axle Compatible

12-speed SRAM Eagle

BR-RS805-F

Is 28mm faster than 25mm

Forged aluminium construction and steel screws

Shimano Ultegra RD-R8150 Di2 12 Speed Rear Derailleur SOFTGOODS 12mm Thru-Axle CompatibleNow 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