PowerCranks Crankset: Octalink - Adjustable Length 165mm-182.5mm - Gold

These unique cranks are a high dollar training tool, that claims to improve your pedal stroke and increase power.  Dual clutches allow each crank arm to operate fully independently, so both arms can freewheel backwards on their own and your downward leg can't help the upward one during a pedal stroke. It's solely up to you to keep your feet moving in circles and the two crank arms in alignment.  In other words, if you are pedaling in a circle, the cranks will go in a circle.  If you are not (most of us are not), then you'll have a hell of a time keeping the crank arms spinning at the same rate and alignment as each other.  This set does have the upgrade feature called "Dual Mode", which is a lockout on each arm to allow these to operate as regular cranks with fixed arms.

The crank arm length is adjustable from 165mm to 182.5mm.  These have also been used by physical therapists to train individual legs or use different lengths for each leg, and even as fitting cranks to dial in arm length. 

Condition

Near mint lightly used shape.  The corners of the arm ends have scrapes, but otherwise these are quite clean with only a smattering of tiny marks.

Details

• BB compatibility: Octalink
• Gold