... frame,mountain bike frame,aluminum bicycle frame 1: Material:Aluminum 2:Size16cm,17.5cm 3:Weight:2.54kg 4:red/black mountain frame,mountain bike frame,aluminum bicycle frame ... meet your special needs.Specifications of carbon mountain frame 1: Material: Aluminum2:Weight 2.54kg3:Hydraulically formed ... multi-buted cnc parts4: Size 16cm,17.5cm5: Color white/black,white/redwith ...