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:G L SpecialKawasaki EN 400 VulcanKawasaki KMX 125Kawasaki Z 200Aprilia RSV 4 Factory Team Aprilia Alitalia Racing SBKKawasaki Ninja 300Lamb Chop 2 by Larry HoughtonKawasaki ER6-RR by Hoely