2007 Yamaha YZ250
(discontinued)
1 member reviews
Untitled
Overall Review:
this is a the bike ever been created it has good power and it kicks
Specifications
Product
Yamaha YZ250
Model Year
2007
Engine Size
250cc
Engine Type
Two-Stroke
Engine Displacement
249cc
Bore x Stroke
66.4 x 72mm
Compression Ratio
9.2 – 10.9:1
Fuel System
PWK38S X 1, reed valve
Ignition
CDI
Transmission
Constant mesh 5-speed/Wet, multiple-disc coil spring
Final Drive
Chain Drive
Suspension Front
Telescopic Fork, coil spring/oil damper, 11.8" Travel
Suspension Rear
Swingarm (link, suspension), coil spring/gas-oil damper, 12.4" Travel
Brakes Front
Hydraulic single disc brake, 224mm
Brakes Rear
Hydraulic single disc brake, 219.8mm
Tires Front
80/100-21-51M
Tires Rear
110/90-19-62M
Overall Length
85.7"
Overall Width
32.6"
Overall Height
51.4"
Seat Height
39.1"
Wheelbase
58.3"
Ground Clearance
15.0"
Rake/Trail
Fuel Capacity
2.1 gal.
Curb Weight
211.6 lb.
Features
Liquid-cooled
Miscellaneous
Key Features:
- Our legendary two-stroke Supercross winner is more potent than ever.
- Winner of "Cycle World", "Racer X" and "Motocross Action" shootouts.
- A light, aluminum frame housing a patented YPVS™ power-valve-equipped ripper of an engine results in an awesome power-to-weight ratio.
- Ready to race out of the crate, complete with new ProTaper aluminum handlebar, titanium footpegs, gripper seat and Excel rims.
New for 2007:
- Modifying thickness of both inner and outer fork tubes and revising damping settings provides fantastic bump absorption and comfort while shaving weight.
- Lightening the rear shock with aluminum /components takes off more weight, and revised settings complement the ones in the fork.
- A light and strong ProTaper aluminum handlebar in adjustable mounts adds comfort and control.
- A new jet needle in the 38mm Keihin PWK carburetor boosts bottom-end and mid-range response.
- Use of lighter, box-head bolts throughout the chassis eases maintenance while reducing weight and increasing performance.
Engine:
- 249cc liquid-cooled, reed valve-inducted two-stroke engine is lightweight, compact and features an incredibly wide, hard-hitting powerband.
- Patented YPVS power valve system combines crisp, hard-hitting bottom-end acceleration with strong midrange and eye-opening top-end.
- Special-design carbon fiber reed-valve pedals improve throttle response and engine performance across the entire rpm range.
- Smooth-shifting, five-speed, close-ratio transmission with heavy-duty, multiplate clutch.
- Primary kickstarter ensures smooth, easy starting action and reduced weight.
- Large-capacity radiator features a ten-row core with four louvers for maximum cooling efficiency.
- 38mm Keihin PWK carburetor with power jet and throttle position sensor (TPS) ensure precise fuel/air mixing and extra-crisp throttle response throughout the powerband.
- Digital CDI ignition system delivers precise spark for faster, stronger response anywhere in the powerband.
- Trick, works-style clutch lever features race-spec barrel adjuster for on-the-fly adjustability.
Chassis/Suspension:
- A carefully engineered, advanced aluminum frame and swingarm give the YZ250 the best handling in the 250 class.
- Speed-Sensitive System 48mm Kayaba fork tubes move the transfer control valves (TCV) above the fork springs, so that damping force is controlled by piston speed instead of position. Along with a bigger base valve hole, the result is a smooth ride and super-precise handling.
- Removable aluminum rear subframe constructed of square-section tubing for reduced weight.
- Rear, fully adjustable Kayaba shock features a super-light titanium shock spring and reduced-friction Kashima coating of internals. 12.4 inches of travel, separate adjusters for high- and low-speed compression damping, and a full lock oil rebound system for increased comfort all add up to fantastic rear wheel control and a sweet ride.
- Lightweight front and rear calipers with aluminum pistons and anti-bubble front master cylinder, 250mm fully floating front and 245mm rear discs, deliver strong stopping power with progressive feel.
- Lightweight 21-inch front and 19-inch rear Excel rims provide exceptional durability and help reduce unsprung weight for optimal suspension performance and handling.
- Tapered rear wheel spacers ease sliding the rear wheel into place, for quicker tire changes.
- Premium Dunlop knobbies offer race-spec traction and wear.
Additional Features:
- Wide, cleated, folding titanium footpegs are lightweight and provide excellent comfort, grip and ground clearance.
- Special-design “gripper” type seat and fuel tank, forward-canted steering crown and low handlebar provide excellent movement and more comfortable ergonomics for riders.
- Wide-diameter fuel tank cap ensures easier usage, while larger tank opening means faster, hassle-free refueling.
- Cleated rear brake lever and folding shift lever tip offer superb grip and exceptional durability.
- Repackable exhaust silencer.
- Durable, comfortable handlebar grips.
- Stainless steel clutch cable for longer life.
2007 YZ450F
Key Features:
- For 2007, the bike that started the four-stroke revolution benefits from significant chassis and engine refinements that ensure the five-titanium-valved YZ450F remains at the head of the open-class pack.
- Modifications to the light and strong aluminum frame and suspension mean light, precise, confident handling at any speed.
- Five-speed gearbox provides maximum flexibility and the right gear for a wide range of riding environments.
- Ready to race straight out of the crate - with a ProTaper aluminum handlebar in adjustable clamps, titanium shock spring, ti footpegs, gripper seat, etc.
New for 2007:
- 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.
- Increasing the length of the rear shock by 1.5mm further sharpens handling. Replacing steel damping adjusters with aluminum ones removes even more weight from the four-way adjustable, titanium-sprung rear suspension unit.
- A more rigid clutch pressure plate helps put power to the ground and dissipates heat more efficiently, especially during partial-clutch operation. Shorter lever stroke with 12-percent reduced effort means instant response.
- New, titanium exhaust pipe fattens low- and mid-range power while simultaneously 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.
Engine:
- 449cc five-valve DOHC liquid-cooled engine is super-powerful yet tractable.
- 39mm Keihin FCR flat-slide carburetor with throttle position sensor (TPS) and leak jet delivers precise fuel/air mixture and instant throttle response.
- Revised CDI ignition keeps that amazingly broad and deep powerband hard-hitting, yet controllable.
- Lightweight, titanium valves and load-reduced springs minimize reciprocating mass for fast-revving, hard-hitting power delivery across the rev range.
- Additional weight-saving engine features include: small-design cam chain tensioner and oil pump, aluminum oil hose, all-titanium exhaust header, flange, bracket and heat shield and light CDI ignition unit.
- Primary kickstarting with automatic decompression and convenient handlebar-mounted hot start lever ensures easy restarts.
- Kick pinion gear is separate from the primary driven gear for smoother clutch engagement.
- Large-capacity radiator is reinforced for greater strength.
Chassis/Suspension:
- Aluminum frame uses a mix of alloy casting, forgings and extrusions to produce a tuned-flex frame that makes the YZ the finest handling motocross bike ever.
- 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 Kashina-coated internals reduces friction for fantastic compliance and great handling.
- More weight savings come via two-piece (part aluminum, part plastic) engine protector plates and thin-walled engine guard construction.
- 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.
- Premium Dunlop knobbies provide 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 gives excellent feel and control, and the seat is lighter for 2007.
- Wide, cleated, folding titanium footpegs are light, strong, and provide excellent comfort, grip and ground clearance.
- Works-style clutch lever features oversize barrel adjuster for easy, on-the-fly adjustability of lever/cable play.
- Cleated rear brake lever and folding shift lever tip offer superb grip and excellent durability.
- Repackable exhaust silencer.
- Durable, comfortable handlebar grips.
- Stainless steel clutch cable for longer life.
Price
$6,299.00
More Info
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