Ultegra Di2 RD-R8150 12 Spd. Headset chewable energy to athletes while

chewable energy to athletes while training and racing

Quality hand pump for those emergency repairs

This can aid in allowing the rider to roll their hips forward for high power output

wide nosed

Three back pockets allow you to keep ride essentials close at hand

Ultegra Di2 RD-R8150 12 Spd. Headset chewable energy to athletes whileNow simplified with a single derailleur cage length, the new 12 speed Shimano ULTEGRA R8150 rear derailleur packs our fastest, most precise shifting into a more approachable option. With our fastest, most accurate shifting, the new 12 speed ULTEGRA R8150 rear derailleur is more versatile than ever thanks to a single cage length option that is compatible with 28 34T low sprockets. FEATURES Our fastest ever rear shifting, 58% faster than RD R9150Compact