I am in the process of building up a DMR rhythm and i was worried as on chainreactioncycles.com it says that there are 9/16" and 1/2" axles, so will 9/16" DMR V8's fit on the BMX primo cranks ? Cheers
Dave

I too am in the process of building up a DMR rhythm, I've got Primo Powerbites with DMR V8's which came off my old mountain bike thread cranks - which are 9/16"

It's generally the cheaper BMX cranks that use 1/2 axles, so stuff like profiles and primos should use 9/16's.

yeah cheers, i just ordered the dmr V8's.