Custom Triumph Grand Prix 1947 Triumph Grand Prix 1947 SPECIFICATIONS, PRICE & IMAGES Engine: parallel twin 500 c.c. o.h.v.; valve operation by Ignition: magneto. Transmission: chain via four-speed gearbox. Frame: cradle type with single down-tube and twin Forks: telescopic. Bike Features More Bike Specifications:Suzuki Hayabusa Supercharged by TSSDucati Hypermotard Igneous Ripper by Rough-CraftsKawasaki VN 800 ClassicKawasaki ZX 1000 Ninja H2RItaljet DragsterSpecial ThunderBuellKawasaki ZX-6RRKawasaki Z2 750RS