Re: my second OP roller build
Standard 44 on the rear that comes in the kits. I have to slot a couple of the holes to clear the spokes due to the different angle of the spokes. I'll say this, this bike will lift the front tire off the ground and take off with a scoot of the feet and an easy clutch. My stock OP needs some pedaling to not stall it out. As soon as I can get some lighting and a set of hand brakes (at least a front brake) I'm taking it out on a trip. It's a heck of a ride.