For 2-Cycle & 4-Cycle Bicycle Engines Features: – with built-in 2.4L gas tank – Pedestal front mount allows fitting of all 2 cycle bike engines with either 40 or 50mm front mount stud spacing – 26″ frame made especially heavy duty for gas engine applications – Available with 135mm rear frame width for either single speed or multi-speed bikes – 38mm diameter downtube 70 degrees angle V frame – Material: Aluminum – No gas tank rusting – No other bike frame in the world is especially made for motorization – Seat post angle allows for level carburetor -Big bottom hole for 1 piece pedal crank – Net weight 6.5 lbs; Gross weight 10.50 lbs; Dimension (box) 43.70 in x 6.50 in x 22.24 in