4Strokes.com Yamaha Technical: 2003 YZ450F vs 2003 WR450F

Difference Yamaha YZ450F Yamaha WR450F Rear Wheel Size 19" 18" Weight (Claimed) 222 lbs 240 lbs Engine Starting Kick Electric Suspension Setup Stiffer Softer Engine Valve Timing More Aggressive Less Aggressive Fuel Tank Capacity 1.8 gal 2.6 gal Drive Chain Non O-ring O-ring Transmission Gear Ratios Close Ratio Wide Ratio Retail Price (USD) $6299 $6499 Rear Wheel Adjuster Screw Snail

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