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 Z 305LTDSkrunkwerks BMW R100 Salt RacerBurasca VFR1200 by Aldo DrudiKawasaki Z1000Akrapovič Morsus by Dreamachine MotorcyclesBMW R1250RT by Hornig“Look Right” by DP CustomKawasaki GPX 600R Ninja