They look like this..
I just want all my bikes to have the same length crank arms. 170 feels so much better.
I just want all my bikes to have the same length crank arms. 170 feels so much better.
170mm boost SLX cranks
- Thread starter Glenn Rides After 4 PM CST
- Start date
This is the exact model. Looks like they only came in 175 and 170. I believe they were 3 ring cranks. 
Shimano FC-M670 10 Speed SLX Triple Chainset - 170mm Arm - 24T / 32T / 42T | eBay
This is the new Shimano SLX M670 10 Speed Hollowtech II Chainset part of the XTR-XT-SLX design cascade. It is a mountain bike chainset. Hollowtech II high provides the combination of rigidity and weight reduction.
www.ebay.com
A bit to pricey. :-(
lol... click on "9 sold"Shimano FC-M670 10 Speed SLX Triple Chainset - 170mm Arm - 24T / 32T / 42T | eBay
This is the new Shimano SLX M670 10 Speed Hollowtech II Chainset part of the XTR-XT-SLX design cascade. It is a mountain bike chainset. Hollowtech II high provides the combination of rigidity and weight reduction.www.ebay.com
A bit to pricey. :-(
the 9 previous ones sold for 149.99, not 1,149.99