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:Kawasaki GPz 250RKawasaki VN 1700 Vulcan NomadKawasaki Z 250FTBrutusDucati Scrambler Dirt Track ConceptBimota DB8 Veleno by Oberdan BezziBMW SCT 800 Superscooter by Oberdan BezziBOTT XC1 Café Racer by Bottpower