Campagnolo Super Record Crankset Stages Power Meter 175mm 12 Speed 50 34t 112 146 Asymmetric BCD Ul Tq Interface Carbon CheckoutTitle=Stan's No Tubes Flow S2 Rear Wheel 29 }Shimano Alfine S501 45t 130mm }Shimano Alfine S501 45t 130mm Outer Chainring Guard Black A versatile all round tire for a combination of terrain that features a unique low profile tread that is tightly spaced in the center for low rolling resistance and durability line height:120% The innovative design of the outer chainring ensures faster quieter shifts thanks to the contoured pin and the symmetrical design of the inner chainring teeth provide improved stability with chain crossovers