172.5 mm crank length, designed for compact rings (110mm BCD).
This is for the crankarms and integrated bottom bracket only. ( I'm keeping the rings for my cyclocross bike.) I've used these for about 4 months on my road bike but have decided to go back to standard rings (53/39). Still turn nice and smooth. Some scuffs from normal wear and tear.
Quoted message said:
From the Bontrager Website:
- Trouble-free carbon arms are lightweight and durable. - Tru-Vativ Giga X-Pipe bottom bracket assembly eliminates power-robbing flex.
