![Shimano Shift Outer Casing SP41 Box 50mm](http://mastermindtri.com/cdn/shop/files/ShimanoShiftOuterCasingSP41Box50mm_{width}x.jpg?v=1688470553)
SP41 - 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 also reduced.