Product Description: When your solo ride turns into weekend expedition with friends, the NV 2.0 Add-On lets you increase the NV 2.0 carrying capacity from two to four bikes in less time than it takes your friends to decide who gets to sit up front. Features: Compatible with 2" NV 2.0 Increases 2" NV 2.0 carrying capacity to 4 bicycles weighing up to 40 pounds each Holds wheelbases up to 48" and tires as large as 4.8" Adjustable front tire cradle system Re-designed pivot with optional foot assist Fully integrated cable locks Trail Doc compatible Quick change from 2 to 4 bikes Front tire ratchet design with intuitive release Rear tire strap features co-molded strap to protect wheels Premium gloss metallic powder with water transferred logos