Profile Design Sonic Ergo 39a Shimano Rear Hub: R1-S30 CADEX Low

Rear Hub: R1-S30 CADEX Low Friction Hub

Steel striking face: 35 mm (1

With a relaxed yet tailored fit

Ergonomic Chamois: Ultra-comfortable two-piece chamois offers support for extended rides

titanium spindle

Profile Design Sonic Ergo 39a Shimano Rear Hub: R1-S30 CADEX LowThe Sonic bracket offers an extensive fit range, low weight and easy adjustment along with minimal frontal area. Combining this with the Ergo armrest creates an aerobar that will aid most riders in optimising their position for both speed and comfort. The 39A is one of the newest versions of our reliable aluminium extension range. Specifications Bracket: SonicClamp Diameter: 31. 8mm (26. 0 w Shims)Armrest: Ergo 10mm PadsArmrest Width: 124mm to 290mm