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I have a Quarq Riken BB30 (for 2010 Cannondale Slice) 170mm arms. I'm wanting shorter crank arms - probably 165mm, but would consider 162.5 too. Would any of the arms you have for sale fit my needs. Also, what is the cost?

Thanks.

Michael

depending on if you have 3 bolt(165) or 8 bolt(162.5) I have those available.
200 shipped ConUS?

I'll check the bolt pattern when I get home. Are these new or used arms?

Also, do you know if I need to recalibrate the Quarq after swapping crank arms? I presume I do need to recalibrate, or is the shorter arm adjusted for in Garmin software (e.g., Garmin 500)?

you should not need to recalibrate. you can check the slope. the strain gauges are in your spider, so crank arm length does not matter. length only matters when checking your slope as you are hanging a known weight a known distance to get the force value to check against slope. I have changed between them and found negligible differences in slope(ie within error of my measurement method) these are used cranks. I'd send you detailed pics of them before any final purchase

PM sent.