The 2004 Yamaha YZ 250 F and all other motorcycles made 1894-2025. Specifications. Pictures. Rating. Discussions.. The Yamaha YZ250F is a motocross motorcycle first released in 2001 by Yamaha. It features a DOHC, four-stroke engine and initially had a steel frame and subframe in 2001-2002. In 2003 it received an aluminum subframe, which was replaced in the 2006 model with an all-aluminum frame.
2004 Yamaha YZ 250F pictures, prices, information, and specifications.. 2004 Yamaha YZ 250 F Back to yamaha Motorcycle Specs Index Page - 2004 Yamaha YZ 250 F MANUFACTURER SPECIFICATIONS Model Yamaha YZ 250 F 2004 Motorcycle Style: Dual-Sport ENGINE SPECS Engine Type: 249 cc, 4 Stroke - Liquid Cooled - Single Engine Bore and Stroke: 77 mm x 53.6 mm Compression Ratio: 12.5:1 Valves DOHC, 5 valves/cylinder Carburetion: 37mm Keihin FCR flat-slide w/throttle.