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 ZG 1200 Voyager XIINorton 500Kawasaki Z 250FTMr Gulp by Mr MartiniBeta 4.0 Country by Oberdan BezziKawasaki GPZ 600R NinjaKRT Kawasaki ZX-10RR SBKKawasaki ZL 600 Eliminator