Shimano Shift Outer Casing SP41 Box 50mm Assos_Short carbon rim features a 21

carbon rim features a 21 mm internal width that pairs nicely with wider

- Weight 153g (pair)

If you are using a 1x you can use a 36T cassette maximum

Height: 35mm

With the push of a button

Shimano Shift Outer Casing SP41 Box 50mm Assos_Short carbon rim features a 21SP41 Shift Outer Casing With OT SP41 the entire length of the outer casing is pre lubricated with a special silicone grease for quick and precise shifting performance. OT SP41 maximally reduces the inner cable friction to provide quick response to operations and easy effortless shifting. Moreover, power loss due to delay in shifting and fatigue by shifting especially when you ride on the terrain with many ups and downs as well as a long distance is