Brand new for this season, the Quartz frame is a x2 World Championship winning super light alloy race frame. Taking our track proven Helium frame as a base, we upgraded the frame to use our new Paradigm 6061-T6 hydroformed superior tubing to shed a considerable amount of weight compared to the Helium frame. The Quartz also uses our new forged dropout design which allows it to be fully disc-brake compatible when used with our Helium Disc Brake Mount.Item Specifications: Color, Matte Black, Defined Color, Black, Fork Type, Not Included, Frame Material, Aluminum, Mfg Size, 20.9, TT (Effective), 20.9, Wheel Size, 20", Platform, Quartz,.