Problem Solvers Eccentric Bottom Bracket Shim - 55mm Casing-400D PT fast-rolling tread pattern specifically designed

fast-rolling tread pattern specifically designed for rear use for optimized rolling efficiency The Michelin Bead-to-Bead Shield casing is built to tackle any challenge Specifically designed to enhance puncture and pinch protection

Fits 110 BCD Asymmetric 4-bolt Shimano cranks

Ultimate in stiffness and durability while only weighing a mere 400 grams - in the same weight range as premium carbon cranks but 20% to 30% stiffer

All this work culminated in the creation of the first wheelset designed with Turbulent Aero technology

- Allows for truing and tensioning of wheel after wheel builds without any special procedures

Problem Solvers Eccentric Bottom Bracket Shim - 55mm Casing-400D PT fast-rolling tread pattern specifically designedThese handy Problem Solvers Eccentric Bottom Bracket Shims allow you to fit your existing Eccentric Bottom Bracket into BB shells with inner diameters of 55mm or 57mm. Anodized black 6061 Aluminum Size 55Mm