RR 521 Hit an unexpected rocky section on your ride? No problem with this rim! Looking for bombproof rims for your gravel or cyclocross bike? Our new RR 521 rim has plenty going for it. With its 32 mm depth and 20 mm width, it would almost certainly have been classed as a cross-country rim a few years ago. But today, this model is a fantastic way to widen the playground of your road bike.
