Shimano RD-R7150 12 Speed Di2 Rear Derailleur Kiddies Clothing When you need the absolute

When you need the absolute best from your training data

Its 460% range is all systems go for any course

DuraFit™ four way stretch recycled polyester

making it the ideal sole for any type of foot

Height adjustable

Shimano RD-R7150 12 Speed Di2 Rear Derailleur Kiddies Clothing When you need the absoluteThis is the hub of the Di2 system, with the charging port, indicator LEDs, adjustment switches and more integrated into a compact package. A low profile design reduces damage from contact and falls. Wide 36T compatible 12 speed Di2 rear derailleur. Receiving the wireless shifting signal from the shift lever, the SHIMANO 105 rear derailleur completes a shift in the blink of an eye with its high performance motor and optimized link structure.