linear straight line tread

a redesigned mast tube collar for stability

with an unprecedented 520-percent range

or experiencing the extra lift and power of an e-bike as you commute

NOTE: Not for use with carbon seat rails or ovalized seat rails

SHIMANO 105 R7100 Crankset - 2 x 12-Speed - 50-34t - 172.5mm garminpromo linear straight line treadThe newly designed crank arms offer an optimized balance between lightweight and efficiency. The crank, formed with hollow aluminum technology, is anodized with a beautiful gloss black anodized finish, giving it a luxurious look. The resin ribs on the back of the chainrings are SHIMANO 105's unique structural design that achieves both thorough weight reduction and crisp shifting performance.