are you on a budget? 52/36 a must?

Yes, on a budget as I really want to test these out to see if I like them better than the 170s I currently run. I am buying a new Cervelo P2 so I'd need crankarms compatible with the crankset that comes with that bike (and on which I can run a pioneer dual crankarm powermeter). Given that, 52/36 is not a must, could do 50/34, etc., I think.

To run a Pioneer you need either an Ultegra or Dura Ace crankset. Those are 24mm bottom bracket, so you will need an adapter for your Cervelo BBright.

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Brian Grasky
Grasky Endurance: World Championship Triathlon Coaching; Professional Training Camps
RETUL fitter, Biomechanist, USAT Level 3 Coach, USAC Level 2 Coach