Shimano Ultegra FC-R8000 Front Chainwheel 170MM 53X39T BlackThe Shimano Ultegra FC-R8000 Front Chainwheel is a Lightweight Rider-tuned Optimized Crankset. The reduced/minimal weight optimizes power transfer efficiency all without sacrificing stiffness. The wider gear pitch allows compatibility with frames of 135mm and 410mm chainstay length. This Chainwheel is available in many sizes: 170mm 50x34T, 170mm 52x36T, 170mm 53x39T, 172.5mm 50x34T, 172.5mm 52x36T, 172.5mm 53x39T, 175mm 50x34T, 175mm 52x36T and 175mm 53x39T.689228623224
