Elevn tapered chromoly forks - 10mm. -Elevn bars 8” rise. These include a new enclosed dropouts with integrated 10mm (3/8″) chain tensioner system , a integrated 1-1/8″-1.5″ tapered head tube, a press Fit BB86 Bottom Bracket, and the RSP 4.0 has been specifically designed to work with 120mm Disc brakes or traditional V brakes, with the optional ELEVN Disc Brake adaptor and 120mm Disc.