Length: 166mm, Width: 52mm. The model recreates the early-season version of the bike ridden by F. Spencer. ?This detailed scale model closely recreates the form of the bike and allows appreciation of the unique chamber and fuel tank layout. ?The single-crankshaft V4 engine showcases Tamiyas trademark attention to detail. ?Aluminum frame and complex fuel tank are exquisitely recreated. ?Vinyl tubing is used to accurately model fuel pipes, accelerator, clutch cables and so on. ?Cowling, chamber cover and seat parts are attached using fine screws. ?Authentic rear suspension utilizes a metal coil spring. ?Comes with a racing stand to display the model. ?The kit includes decals to depict the bikes markings, in addition to masking seals to aid with painting.