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! ###section### Product Specs WHEEL SIZE: 20" SEAM: Carbon ERD: 378 HEIGHT: 25mm WIDTH: 30mm SPOKE HOLES: 36 WEIGHT: 320g/11.2oz