PERFECT FOR ENDURO RACING AND TRAIL RIDINGBased on YZ450F, packed with "out-of-the-box" enduro features: 18-inch rear wheel, computer, head and tail lights, CARB and EPS compliant.Features may include:Innovative YZ450F-Based Engine DesignWith a revolutionary rearward slanted, liquid- cooled, DOHC 4-stroke powerplant with four titanium valves based on the YZ450F, a wide ratio five-speed transmission and WR- specific modifications—the WR450F is an "out-of-the-box" enduro machine. (California Green Sticker compliant with a forestry service-approved spark arrestor.)
MULTI MOTO SHOOTOUT WINNERDirt Rider, and shootout winner. Huge power and industry-best suspension, even better for 2017.Features may include:Innovative Engine DesignThe revolutionary rearward-slanted-cylinder design of the YZ450F allows for a straight down-draft intake with a symmetrical port layout for smooth controllable power delivery throughout the RPM range. This engine design also achieves unmatched mass centralization, for light and nimble handling.GYTR® Power Tuner ReadyAccessory GYTR Power Tuner lets owners adjust air/fuel mixture and ignition timing maps to match engine performance characteristics to the rider and track conditions in a matter of seconds with the push of a few buttons, as well as monitor engine diagnostic codes.
PURE 450CC X-COUNTRY RACERDesigned for closed course X-Country and enduro-type racing the YZ450FX combines light, nimble handling with the power of a 450.Features may include:Innovative Hare Scramble/GNCC® Engine DesignThe YZ450FX shares the revolutionary rearward-slanted-cylinder design of the YZ450F that allows for a straight downdraft intake with a symmetrical port layout. In the YZ450FX, this engine delivers a controllable, torquey power character with strong top-end power tuned specifically for cross-country racing.Bilateral Beam Aluminum FrameA nearly identical bilateral beam frame that is found on the championship winning YZ450F is used on the YZ450FX. It places the engine, fuel tank and exhaust close to the center mass of the bike for extremely light and nimble handling character.
2007 Yamaha YZ450F, Great used bike with less than 15 HRS! No issues and ready to ride! Have title in hand! 2007 Yamaha YZ450F Key Features May Include 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. Features & Benefits 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 provides sharp 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
