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:Honda CB350 by Titan Motorcycles“EVE LUX” by Bandit9Kawasaki Z 400Ducati Desmosedici GP19Exile Fat BlokeKawasaki Z1000Yamaha FZ-09 Street Tracker by Droog MotoNinja