2007 Yamaha YZ250F

New 2007 Yamaha Dirt Bikes

Sep. 01, 2006 By ORC STAFF
New Features and Refinements
2007 Yamaha YZ250F
  Key Features:
  • Five-titanium valve engine spins out amazing torque and horsepower all the way to 13,500 RPM.
  • A carefully tuned aluminum frame made up of forgings, weldings, castings and tubing means sharp, super-precise handling.
  • Increased mass centralization and 2.5-pound weight reduction provides fantastic overall balance and performance.
  • A ProTaper aluminum handlebar in adjustable clamps, Excel rims, titanium footpegs and shock spring are just a few tricks up the YZ250F's sleeve.
 New for 2007:
  • Carburetion, ignition and other modifications provide more top-end performance and over-rev ability.
  • The engine mounting angle has been changed; rotating the cylinder head rearward changes the balance of the machine for compactness and sharp handling. Smaller engine mounting bolts and other things add up to 2.5 pounds less weight.
  • Moving the steering head 3mm rearward makes the bike super-nimble turning into tight corners and carves tight lines.
  • Replacing the upper cast triple clamp with a light and strong forging, slightly reducing steering head rigidity, and the use of lighter outer fork tubes, lighter wheel rims and light wave-type brake rotors add up to super-accurate, super-responsive steering.
  • A lighter front brake caliper and master cylinder with smaller pistons saves weight; a new front brake lever gives excellent feel. The result is outstanding braking power and less unsprung front-end weight.
  • Increasing the length of the rear shock by 1.5mm further sharpens handling. Replacing steel damping adjusters with aluminum ones removes more weight from the four-way adjustable, titanium-sprung rear suspension unit.
  • New exhaust pipe works with engine changes to boost top-end response while adhering to 2007 AMA noise regulations.
  • This year’s ProTaper aluminum handlebar bend raises the grips 8mm for an expanded cockpit. Forged bar clamps reduce weight for superior handling.


  • Liquid-cooled, 249cc, five-titanium-valved, DOHC, four-stroke is powerful and highly tractable, with a 13,500-rpm redline for broad, competition-crushing pulling power.
  • 37mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) ensures precise fuel/air mixing and lightning-quick throttle response.
  • CDI ignition provides a hot, consistent spark across the powerband for right-now throttle response.
  • Light, dished forged piston reduces reciprocal mass and friction for faster revving and excellent durability.
  • Lightweight titanium header pipe (with titanium heat shield) flows into a new aluminum silencer for maximum power.
  • Cylinder body and crankcase feature a large cut-away section to reduce pumping loss and increase mid-range performance.
  • Primary kickstarting with automatic decompression and convenient handlebar-mounted hot start lever ensures easy restarts.
  • Slick, five-speed transmission with heavy-duty, multiplate clutch features an involute spline set-up, ensuring smooth shifting and instant hook-up under power.
  • Magnesium cylinder head cover helps shave weight.
  • Trick, works-style clutch lever features race-spec barrel adjuster for on-the-fly adjustability.
  • The dry sump oil tank now has an internal partition for better oil flow, and revised oil lines reduce weight.
  • Aluminum frame uses a mix of alloy castings, forgings and extrusions to produce a tuned-flex frame that makes the YZ250F the best handling bike in its class.
  • Speed-Sensitive System 48mm Kayaba fork places transfer control valves (TCV) above the fork springs, so that damping force is controlled by piston speed: Eliminating mid-stroke damping force changes provides a smoother, more precise ride.
  • Titanium-sprung four-way adjustable rear shock with Kashima-coated internals reduces friction for fantastic compliance and great handling.
  • Removable aluminum rear subframe constructed of square-section tubing for light weight and easy maintenance - lighter fasteners for 2007 enhance weight distribution and handling.
  • Lightweight front wheel hub for reduced unsprung weight and increased durability.
  • Lightweight front and rear brake calipers with aluminum pistons, combined with new wave-style rotors reduce unsprung weight and deliver strong stopping power with progressive feel.
  • Premium Dunlop knobbies offer unbeatable, competition-spec traction and great wear.
  • Lightweight 21-inch front and 19-inch rear Excel rims are exceptionally durable and reduce unsprung weight.
 Additional Features:
  • “Gripper” style seat cover offers excellent feel and control.
  • Wide, cleated, folding titanium footpegs are lightweight and provide excellent comfort, grip and ground clearance.
  • Cleated rear brake lever and folding shift lever tip offer superb grip and excellent durability.
  • Durable, comfortable handlebar grips.
  • Stainless steel clutch cable for longer life.

2007 YZ250F
Engine Type 250cc, liquid-cooled, 4-stroke, DOHC, 5-valve
Bore and Stroke 77mm x 53.6mm
Compression Ratio 12.5:1
Carburetion FCR-MX37 x 1
Fuel System MikuniTM VM12
Ignition CDI
Transmission Constant mesh 5-speed/Wet, multiple-disc
Final Drive Chain Drive
Front Suspension Telescopic Fork, coil spring/oil damper, 11.8"
Rear Suspension Swingarm (link, suspension), coil spring/gas-oil damper, 12.1" travel
Front Brake Hydraulic single disc brake, 250mm
Rear Brake Hydraulic single disc brake, 245mm
Front Tire 80/100-21-51M
Rear Tire 110/90-19-57M
Overall Length 85"
Overall Width 32.5"
Overall Height 51.2"
Seat Height 38.7"
Ground Clearance 14.6"
Wheelbase 57.8"
Dry Weight 220 lb
Fuel Capacity 1.8 gal.
Warranty 30 Day (Limited Factory Warranty)
MSRP*$6,149 (Team Yamaha Blue/White) Available from November 2006
$6,249 (White/Silver) Available from November 2006

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