Yamaha WR 450F

Equipped with the most advanced engine and chassis technology ever developed for a Yamaha dirt bike, the WR450F is ready to shake up the off road world.

Built for serious enduro racers as well as long distance rally riders and experienced recreational riders, the latest generation WR-F produces strong and linear torque that gives you outstanding performance together with a high level of controllability.

For lightweight handling this high-tech off road bike is equipped with a compact, mass centralised chassis – and with its wide ratio 5-speed transmission, latest KYB® suspension and main switchless electric start, the Yamaha WR450F is ready to win.

CONQUER DIRT
The WR450F utilizes many of the same features as our championship winning YZ450F. Yamaha’s engineers draw on the highest level of competition for inspiration & innovations. From engine design to suspension to exterior styling, the racing performance & presence of our legendary YZ models can be found in our entire off road competition model lineup.

POWER
The WR450F utilizes our latest championship winning YZ450F rearward slanted, reverse fuel injected engine design. Tuning has been revised to suit enduro style use. The WR450F produces serious power for those riders who are serious about winning. And with our optional GYTR Power Tuner and special kit ECU, the machine can be quickly “tuned” to suit riding conditions and rider preferences.

FRAME
Compact Bilateral Beam aluminum frame centralizes mass for exceptional handling & maneuverability, especially in tight technical situations. By centralizing mass, our engineers have produced a machine that feels and handles more like a 250. Add in the industry’s best suspension system with improved settings for  and you have an unbeatable combination.

Powering you into the victorYZone

Yamaha are powering into the  season with the latest WR250F and WR450F, two of the world’s most innovative and successful enduro bikes with a distinguished track record in EnduroGP and Enduro 2. Benefitting from some of the most advanced GP-developed engine and chassis technology, the WR250F and WR450F have the potential to take every rider into the victorYZone.

The WR-F’s unique reverse cylinder head layout features a front facing inlet and rear exiting exhaust that increase intake and exhaust efficiency, thereby enhancing the engine’s linear torque feeling. This innovative design delivers deep reserves of highly controllable and easy-to-use power, giving Yamaha WR450F and WR250F riders a real performance advantage.

The WR-F’s mass centralized design delivers high levels of agility for precise control over all types of terrain – and the advanced aluminium chassis with its class-leading suspension gives excellent handling performance and traction over rock, sand, grass, dirt and mud.

With class-leading durability and legendary Yamaha reliability as standard, the  Yamaha WR450F and WR250F give you winning performance combined with a thrilling ride on any type of terrain.

WR250F & WR450F

Developed using our extensive EnduroGP and rally experience, the  Yamaha WR-F models are supplied ready to win straight from the crate. Both the WR250F and WR450F benefit from the latest Yamaha reverse cylinder head technology thafeatures a straight inlet for instant response with strong linear torque. The switch-free electric starter gets you going quickly and easily – very handy when you’re on the side of a hill or in a deep bog – and the enduro-specification radiators come with a lightweight cooling fan that regulates engine temperature even in severe conditions.

The list of standard features also includes a bright headlight and LED taillight, and the multi-function LCD enduro race computer gives you the information you need to ensure you stay on time.

The WR250F boasts a number of new features starting with its revolutionary rearward slanted, liquid-cooled, DOHC 4-stroke power plant with 4 titanium valves. A new cylinder head design with reshaped intake and exhaust ports matched to a new shorter intake funnel help to boost top end power, and new camshafts and valve springs were developed to further increase low to mid range power output.

The WR250F also receives a new lighter flat top piston design mated to a new shorter piston pin containing a DLC (diamond like carbon) coating to reduce friction and increase hardness.On the bottom end, the crank has adopted a new balance ratio and new nickel-chromoly steel connecting rod to produce broad, balanced, and predictable power while boosting reliability. These changes are regulated through a revised ECU that sends new 3-D mapping to the fuel injection system to optimise power output and engine feeling as well as improving the rev limiter. For a smoother clutch feeling the clutch push lever is redesigned, and to save weight, the kickstarter mechanism is removed.

Not stopping there, the same bilateral beam frame that is found on the winning YZ250F was added to the WR250F to improve handling. Featuring a central beam that’s 12mm wider at the widest point – as well as newly shaped steel engine brackets and repositioned foot pegs – the  WR250F is an extremely strong and well balanced machine, offering precise handling combined with high stability to attack both technical and high-speed sections.

The industry leading, fully adjustable KYB® spring-type forks and the KYB® rear shock come with optimised settings that work in harmony with the revised frame and engine character. For  the WR250F comes with fresh new graphics, blue rims and an additional side cover.

For  the WR450F benefits from a new ECU that optimises fueling and ignition timing for improved throttle feel and a smoother pick up. Revised suspension settings deliver enhanced handling characteristics, and weight is reduced with the removal of the kickstarter. Also featuring new graphics, blue rims and an additional side cover, the  WR450F brings EnduroGP performance to every rider.

WR450F: New Features
• New ECU and engine maps
• Optimised suspension settings
• Additional side cover
• New graphics and blue rims

WR250F & WR450F Technical Highlights
• Powerful, compact and controllable 450cc / 250cc 4-stroke
• Potent fuel injected engine with linear torque
• Reverse cylinder head with front facing intake
• Aluminum beam frame with optimised rigidity
• Wide ratio transmission (WR250F 6-speed; WR450F 5-speed)
• Durable enduro clutch
• Switch-free electric starter and auto-decompressor
• Convenient optional Power Tuner for easy tuning
• Mass centralized design for agile handling
• Top mounted quickly removable air filter and underseat fuel tank
• High-specification suspension systems
• 18-inch rear wheel and Metzeler 6 Days FIM / Extreme tyres
• Enduro-spec radiators with lightweight cooling fan

Features

• “Reversed” rearward slanted engine design with 4-valve cylinder head (titanium valves)
• Forward mounted fuel injection & rear exiting “wrap around” exhaust
• Electric starting
• 5-speed, wide ratio transmission
• Radiator fan
• Bilateral Beam aluminum frame
• YZ based, adjustable suspension
• 270 mm front & 245 rear disc brakes
• 18 inch rear wheel
• 35 watt headlight & LED tail light
• GYTR Power Tuner compatible (Competition Only Kit ECU is required)
• Lightweight aluminum side stand
• Heavy duty plastic engine skid plate
• Convenient oil level sight glass
• Lightweight, extra wide foot pegs
• Folding shift lever tip
• Heavy duty rubber swingarm protector
• Lightweight chain guide / support reduces chance of chain derailment & helps protect rear sprocket
• Heavy duty sealed “O” ring chain
• Easy access GYTR Power Tuner & Yamaha Diagnostic tool connectors
• Sealed, no spill, gel type, low maintenance battery (battery should be charged during winter storage)

• Racing-Derived Updates
  For , the WR450F receives a range of updates developed from the YZ450F and FX racing models, including a new side cover, tires and revised suspension tuning, featuring a new fork seal wiper for durable sealing in the toughest conditions.
• Innovative YZ450F-Based Engine Design
  With 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.
• Electric Starter System
  Main switch-free electrical system provides push-button electric starting convenience. Just push the starter button and go—no need to power on a main switch or insert a key.
• Bilateral Beam Aluminum Frame
  The WR450F features a YZ-bred aluminum bilateral beam frame—engineered from castings, forgings and extrusions—with engine mounts optimized for chassis rigidity characteristics needed in enduro riding conditions.
• Industry Leading KYB® Suspension
  Industry leading, fully adjustable YZ450F-based KYB® spring-type forks with speed-sensitive damping and KYB® shock delivers precise, best-in-class, fade-free handling.
• Enduro-Ready WR450F Features
  WR450F-specific details include a wide-ratio five-speed transmission, temperature regulating radiator fan, an optimized clutch, sealed O-ring chain, enduro-specific tires with an 18-inch rear wheel, skid plate, and a standard side-stand. A bright headlight, LED taillight and a complete LCD enduro race computer are ready for long race days.
• 270mm Front Brake
  270mm front disc brake offers outstanding machine control and performance, with exceptional stopping power and controllability.