Profile Design Sonic/Ergo 39A Tri Bars Chainsets & Cranks Rear Derailleur- Shimano 105 Di2

Rear Derailleur- Shimano 105 Di2

Reinforced rear storage pockets

3” tires mounted on aluminum single wall 36H rims with 3/8” in axle front hub and 9T cog sealed bearing cassette rear hub

Designed to help you make the most of the seasons

Profile Design Sonic/Ergo 39A Tri Bars Chainsets & Cranks Rear Derailleur- Shimano 105 Di2The 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 optimizing their position for both speed and comfort. The 39a extensions have a 39 for the grip . The rider can choose whether to hold high for the shrugged position or low for a more open, head up position.