PowerCranks X-Lite Crankset: Adjustable Length 165mm-182.5mm, Square Taper, Octalink, ISIS Adapters, Double & Triple 110mm BCD Spiders

These unique cranks are a high dollar training tool, that claims to improve your pedalling stroke and increase power.  Dual one-way 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 crankarms in alignment.  In other words, if you are pedalling 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.  

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.

This is the "X-Lite version, which has the arms milled out for weight savings and cool looks.  It retails for $1200, with only one spider and one BB interface.  This one is just barely used, and comes with a handful of extras.  It includes a double 110mm spider, a triple 110/74mm spider, and adapters to use with Octalink V1, ISIS, and square taper bottom brackets.

Condition

Excellent or better lightly used condition.  Very low miles.  The double spider (the one not on the crank) is brand new, as are both the ISIS and Octalink V1 adapters.  The anodizing on the crank arms look great with barely a mark.  The non-drive arm end has just a little bit of scuffing.  Comes in original box with business card.

Details

• BB compatibility: ISIS, Octalink V1, and square taper 
• Spiders: 110mm double, 110/74mm triple
• Gold
• MSRP: $1200, + extra spider and BB adapters