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:#57 Kawasaki W 800Broken ArrowYamaha YZR 500 2000 - 2002Lucille by Guilty CustomsThe Uno Indian Scout “Miracle Mike” by Young Guns Speed ShopKawasaki GPz750 Custom by Paul HutchinsonKawasaki KE 125