The AeroCoach ARC is the world's first TT specific noncircular chainring, specifically designed for the pedalling characteristics of time trials, in a full carbon aero single chainring design. Weighing in at only 112g (54t).. The ARC's subtle shape is designed to mimic the firing patterns of your leg muscles whilst riding, increasing the gearing size when you most need it.
The unique time trial specific design will help increase power output by 3-5w, and allow a smoother pedal stroke than normal. Unlike other noncircular designs you can train on the ARC ring without causing a detriment to your pedal stroke and swap between round/ARC rings without difficulty.
The ARC has a full carbon aerodynamic design with custom long teeth to retain the chain, meaning that you can remove the front derailleur. This can save between 1-4w at 30mph depending on the size of the derailleur. It is not recommended to shift using a front derailleur as this may damage the long teeth and will void the warranty.
Standard 130BCD but we can manufacture custom BCD to fit your exact crankset