Profile Design Sonic/Ergo 39A Tri Bars Chainsets & Cranks unlocking less-used trails and cramming

unlocking less-used trails and cramming more into less time

Chain- Shimano CN-M6100-12

Reinforced rear storage pockets

Rear Derailleur- Shimano 105 Di2

Profile Design Sonic/Ergo 39A Tri Bars Chainsets & Cranks unlocking less-used trails and crammingThe 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.