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:Moto Guzzi 350 RacersBMW R nineT Moto Kit by Hookie CoKawasaki Ninja 250R Special EditionMV Agusta 750S Classic Concept by Oberdan BezziKawasaki Z 900LacamaDucati Pro Street Tracker by Fuller MotoKawasaki KLR 600