Profile Design - Sonic Ergo+ 52 ASA Stock Item:PROFILE SONIC / ERGO+ / 52 ASA (400mm) AEROBAR A rigid internal plastic structure

A rigid internal plastic structure keeps the bag upright and stable and the universal headset fitting accommodates all headsets

Compatible with 4-arm chainrings (BCD 104mm)

RIM DEPTH - 21MM INTERNAL

Compatible with: 9

Profile Design - Sonic Ergo+ 52 ASA Stock Item:PROFILE SONIC / ERGO+ / 52 ASA (400mm) AEROBAR A rigid internal plastic structurePROFILE DESIGN SONIC ERGO+ 52 ASA Introducing the Sonic Ergo+ 52 ASA the next evolution of our wildly popular Aero Shaped Carbon (ASC) extensions, now available in a sleek, high performance aluminum. Crafted with an advanced multi stage forming process, the 52 ASA extensions brings the same arm hugging benefits of our iconic shaped extensions, all at a more affordable price. Our Sonic bracket offers an extensive fit range, low weight and easy