Amber Strut Matte Red BMX Bike Frame:Strut hi-tensile strength 1020 steel frame Crank:AMBER "Sepher" Cranks, 175mm tubular chromoly heat-treated 3pc. cranks with 8 spline spindle Chainwheel:AMBER "Achnid" 25t Steel Rear Hub:Semi-sealed 36H cassette hub.1-piece 9-tooth chromoly driver, hollow 14mm chromoly axle Saddle:AMBER one-piece seat and alloy post combo