105 BB-5500 Fenders vinyl-dipped steel MOUNTING SYSTEM Quick-release

vinyl-dipped steel MOUNTING SYSTEM Quick-release spring-loaded universal rack attachment (for mounting to racks)

Behind the heritage and support of the USTA

Ability to increase stack up to 70mm with optional Aerobar Bracket Riser Kit

The BTY CS series from Butterfly is designed for the developing recreational player preferring a penhold grip

105 BB-5500 Fenders vinyl-dipped steel MOUNTING SYSTEM Quick-releaseAs a direct descendent of Dura Ace, no other road component group provides the same cost performance value as Shimano 105. The Octalink V1 8 spline interface between the BB and crank arm forms a strong highly rigid connection that reduces weight and increases strength.