2003 Yamaha WR250F Competition Model

Articles specific to Yamaha.
Respond to existing topics with questions or comments.
User avatar
4Strokes
Site Admin
Posts: 1238
Joined: May 02, 2016

2003 Yamaha WR250F Competition Model

Postby 4Strokes » Tue Feb 28, 2017 5:05 pm

03wr250f.jpg
2003 Yamaha WR250F Competition Model

All the power and performance you’d expect from Yamaha’s revolutionary four-stroke machines and a redesigned frame, automatic decompression and electric start? It seems your WR250F just keeps getting better.

Inventing trends when it comes to four-stroke technology, Yamaha already gave woods and dessert racers everything they needed to take home championships and still, Big Blue continues to find ways to improve on perfection. For 2003, Yamaha added push-button ease to starting with all-new electric start; all-new front and rear master cylinders and calipers for stronger stopping power; and an automatic decompression system and hot start system with a convenient, handlebar-mounted lever ensuring easy restarts in any gear.

Separating the WR250F from its track-ready YZ brothers are the additional accessories for that rider who chooses the open trails over the tight tracks. The WR250F features a 60-watt halogen headlight, a taillight, voltage regulator, tripmeter, 18-inch rear wheel, 2.6-gallon fuel tank, wide-ratio transmission and a U.S. Forest Service-approved spark arrestor. A light chain, lightweight hub, aluminum spoke nipples, and 18-inch Dunlop rear tire complete one of the most aggressive rear setups on a production machine today. For 2003, the WR also receives all-new bodywork including a flatter seat and radiator shrouds for a more aggressive riding position. And, for those eduro racers, the larger-capacity fuel tank means less fuel stops along the way.

Highlighting the list of innovations on the liquid-cooled, 249cc four-stoke is the patented five-valve head with titanium valves, a first for a production motorcycle. A 37mm Keihin FCR, with throttle position sensor (TPS) carburetor is designed to offer even better throttle response in a wide range of conditions.

Providing superior shifting, the highly acclaimed "three bar" shifting mechanism graces the tranny. Three shift fork guide bars are used to improve the power shift feeling when slamming the gears after a long straight or short shifting the bike out of turns. In addition, the WR250F features the “works-style” adjustable clutch perch (fully adjustable at the line with no tools!) and lever makes for a better response and a superior feel.

The 2003 WR250F’s brake system receives upgrades with an all-new, lighter-weight front and rear master cylinders and calipers, combined with a floating 250mm front disc and 245mm rear disc for superior stopping power and greater control.

For those long rides through tight turns, and twisting trails, the WR250F suspension system features an all-new, tapered rear swingarm for a smoother ride and rigidity balance, enhancing overall rider handling and comfort while shaving weight. A 492mm rear shock absorber adds to the bike’s already plush suspension. The rear shock has a fully adjustable Hi-Lo compression damping adjuster that allows the rider to dial in his suspension to meet the ever-changing conditions from the desert to the woods.

Also helping to keep weight to a minimum, the WR250F features a removable aluminum subframe, and, for 2003, an all-new removable rear subframe constructed of aluminum square-section pipe. The frame features HT-780 high-tensile steel tubing that is lighter, thinner, yet stronger on the main tube. From the rider’s perspective, these changes translate to a more nimble machine, allowing the rider to carve sharp turns through the woods and quickly avoid those stubborn boulders strewn about the desert trails.

The 2003 WR250F will be available in Team Yamaha Blue/White at a manufacturer’s suggested retail price is $5,799.

Engine Specifications
Type: 249cc, 5-valve (titanium) liquid-cooled, DOHC, four-stroke
Bore & Stroke: 77 x 53.6mm
Compression ratio: 12.5:1
Carburetor: 37mm Keihin FCR flat-slide w/throttle position sensor

Transmission Specifications
Type: Wide-ratio, 5-speed, multi-plate wet clutch

Chassis Specifications
Front suspension: 46mm Kayaba inverted telescopic fork, 11.8" of travel; adjustable compression and rebound damping
Rear suspension: Fully adjustable Kayaba single shock, 12.4" of travel; separate Hi/Lo-speed compression adjustments
Front brake: 250 mm floating disc
Rear brake: 245 mm disc
Front tire size: 80/100-21 Dunlop 739
Rear tire size: 100/100-18 Dunlop 739

Capacities
Fuel tank: 2.6 gallons

Dimension and Dry Mass
Overall length: 85.1"
Overall width: 30.5"
Overall height: 51.2"
Wheelbase: 58"
Ground clearance: 15"
Seat height: 39.2"
Dry mass: 230 lbs.

User avatar
4Strokes
Site Admin
Posts: 1238
Joined: May 02, 2016

New for the 2003 Yamaha WR250F

Postby 4Strokes » Mon Dec 04, 2017 1:15 pm

  • For 2003, Yamaha added push-button ease to starting with all-new electric start.
  • All-new front and rear master cylinders and calipers for stronger stopping power.
  • An automatic decompression system and hot start system with a convenient, handlebar-mounted lever ensuring easy restarts in any gear.
  • All-new bodywork including a flatter seat and radiator shrouds for a more aggressive riding position.
  • All-new, lighter-weight front and rear master cylinders and calipers, combined with a floating 250mm front disc and 245mm rear disc for superior stopping power and greater control.
  • All-new removable rear subframe constructed of aluminum square-section pipe.


Return to “Yamaha Articles”

Who is online

Users browsing this forum: No registered users and 1 guest