Box One Carbon Race Rim

The Box One Carbon 20″ Rims feature a double-walled, eyeleted, low profile design and optimized internal geometry to be both lightweight and durable with Schrader valve hole and machiined braking surface on the rear rim. Please Note: Front rim does not have a brake track and therefore is not designed to be used with rim brakes! They are to be used as front or rear rims with disc brakes ONLY! Product Specs WHEEL SIZE: 20″ SEAM: Carbon ERD: 378 HEIGHT: 25mm WIDTH: 30mm SPOKE HOLES: 36 WEIGHT: 320g/11.2oz