Racer X Films: 2019 Yamaha YZ250F Garage Build

The Yamaha YZ250F is an incredible machine right off the showroom floor, but we always want more. Parts Used: Twisted Development Engine Mapping with Stock ECU, Head Porting (valve seats cut) Vertex Pistons GP Racer High Compression Piston Kit (rings, DLC pin, clips) Factory Connection Suspension Rebuild/Service and Re-Valve Supersprox Rear Sprocket, Front Sprocket, Gold MX Race Chain G520-MXT-L-120 Uni Filter