Problem Solvers Eccentric Bottom Bracket Shim - 55mm Casing-400D PT - Allows for truing and

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

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

Flat Protection Tread Color Black Weight 790 Weight (oz) 27

Comes with soft inner collar

Problem Solvers Eccentric Bottom Bracket Shim - 55mm Casing-400D PT - Allows for truing andThese 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