Shimano dura ace di2 r9150 2x11sp sti shifterthe dura ace di2 9150 shifters feature an ideal ergonomic shape that is comfortable in the hand and have been updated to be more precise and more adaptable than previous editions the shift paddles now feature a more defined click and have been extended in length for more confident and comfortable shifting e tube compatibility means that the function of the shift paddles can be customised to suit the rider the 9150 shifters now include synchro shi