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:Ducati 600 TT PantahStG NautilusKawasaki Ninja H2R by Trick StarKawasaki KLE 1000 VersysP-40 Warhawk by Hardcore ChoppersKawasaki Z 250LTDKawasaki ZZ-R 1100 Harley Iron Guerilla by Rough Crafts