There are lots out there in the 170 range, most notably Shimano product and Race Face DH stuff. Hunt around on QBike.com for the hawt deals. Most SS-specific cranks will be in the 175-180mm range, but there is no reason why you couldn't just run a std mtn crank with 1 ring and a bashguard.Axis II said:What are the best options for a good crank to run on my fixed MTB? I'm thinking I'd probably want something with somewhat shorter arms for clearance sake. I run 175s on my current rides. Anyone make a suitable 170mm crank?