New 2024 Yamaha WR450F

Lighter, more compact with increased power across the entire rev range, the all-new 450cc engine runs revised ECU settings that also enhance low-end tractability.

A redesigned aluminum bilateral beam frame with a 15mm lower head pipe joint allows the frame rail and tension pipe to sit lower, and along with WR450F-specific front engine mounts, provide just the right amount of strength and flex for the perfect balance of straight-line stability and cornering performance. With a lower center of gravity, the WR450F is a better handling machine with lighter feel, more agility and increased traction for tackling tight, technical trail sections with greater confidence.

A new three-spoke pattern joins the blue anodized Excel rim to a lighter hub, and a new YZ450F-spec rear brake system sheds further weight. The rear wheel axle is wider in diameter for enhanced ride feedback.

An all-new disc clutch design replaces the coil springs of the previous model and integrates primary gear and basket into a single steel unit. The result is a more compact, lightweight and durable assembly which yields smooth engagement and excellent feel. Premium clutch cover employs a stylish geometric design for a bold look.

All new tri-shaft transmission layout vertically stacks the transmission shafts, raising the center shaft and forming a triangle between the crank, drive shaft and main shaft for a lighter, more compact transmission. Gear ratios are optimized for enduro conditions.

WR450F's front fork and rear shock settings are optimized for enduro competition. Front fork now features redesigned fork seals for improved seal life and a new hand operated compression clicker for simple, toolless adjustments. Additionally, a 10mm lower seat height than the YZ450F provides a lower center of gravity for improved low-speed maneuverability.

A new slimmer, flatter and more compact body eases rider movement for improved control, including a flatter seat with more rounded edges, seamless side covers and more narrow shrouds. The rider triangle is also improved with increased legroom between the seat and footpegs, and revised handlebar position for a more natural posture and enhanced rider comfort.

A redesigned aluminum bilateral beam frame with a 15mm lower head pipe joint allows the frame rail and tension pipe to sit lower, and along with WR450F-specific front engine mounts, provide just the right amount of strength and flex for the perfect balance of straight-line stability and cornering performance. With a lower center of gravity, the WR450F is a better handling machine with lighter feel, more agility and increased traction for tackling tight, technical trail sections with greater confidence.

The industry-leading, fully adjustable KYB® coil spring-type fork with speed-sensitive damping provides exceptional balance between handling and bump absorption, and now features a new hand operated compression clicker for toolless adjustments. The linkage-type rear suspension uses a KYB® shock with specially-tuned damping characteristics to match the WR450F chassis. New settings also result in a 10mm lower seat height than the YZ450F and lower center of gravity for excellent cornering performance and rider comfort in technical sections.

Compact front and rear brake calipers work with aggressive pad compounds and lightweight discs to provide exceptional braking power and control, efficiently dissipate heat and reduce unsprung weight. A new YZ450F-spec rear brake system sheds further weight.

The completely redesigned 450cc liquid-cooled DOHC four-stroke engine is lighter, more compact and features stronger pulling power across the entire rev range.

A new slimmer, flatter and more compact body eases rider movement for improved control, including a flatter seat with more rounded edges, seamless side covers and more narrow shrouds. The rider triangle is also improved with increased legroom between the seat and footpegs, and revised handlebar position for a more natural posture and enhanced rider comfort.

Based on the benchmark-setting YZ450F motocrosser, the all-new WR450F is more versatile than ever. Lighter and more compact with a lower center of gravity, WR450F has been developed for enhanced performance and handling at all speeds. With a more tractable and longer pulling engine, revised ECU settings, new chassis, new wide-ratio transmission, lightweight rear wheel and brake system, and more, the new 2024 WR450F is ready to tackle the toughest off-road conditions.

The engine breathes through a 44mm Mikuni® throttle body fed by a high-pressure electric pump to ensure optimum fuel atomization and power for a wide range of altitudes, weather and riding conditions.

The new 2024 WR450F's advanced four-stroke engine has been completely redesigned to be lighter, more compact, higher revving and more powerful across the entire rev range. Among the changes are new exhaust and intake port shapes, larger diameter titanium intake valves, new piston, cylinder, crankshaft and balancer assembly, and a switch from wet sump to dry sump lubrication. Additionally, ECU settings are tailored to suit the specific needs of trail riding and enduro competition.

The WR450F features a compact electric starter system to minimize restart delays in competition and add convenience everywhere else. Powered by a high-capacity and lightweight four-cell lithium-ion battery, the system adds consistent performance and minimal weight.

The all-new clutch design replaces the coil springs of the previous model with a new disc spring and integrates primary gear and basket into a single steel unit. The result is a more compact, lightweight and durable assembly which yields smooth engagement and excellent feel. Premium clutch cover employs a stylish geometric design for a bold look.

An all-new Traction Control System communicates wheel slip to the ECU, tuning the engine to maintain ideal rear wheel traction. Three levels can be selected: HIGH, LOW or OFF.

The WR450F’s wide-ratio 5-speed transmission provides the right gear for any off-road situation, from tight technical sections to open fields and fire roads. The all-new tri-shaft transmission layout vertically stacks the transmission shafts, raising the center shaft and forming a triangle between the crank, drive shaft and main shaft for a lighter, more compact transmission.

Striking the perfect balance of precise cornering performance and handling stability, the redesigned aluminum bilateral beam frame consists of more than 10 different aluminum components welded together with WR450F-specific engine mounts. The new frame design results in a lower center of gravity for better handling, lighter feel, improved bump absorption and increased traction, allowing the rider to enter corners with greater confidence and more line choices.

The industry-leading, fully adjustable KYB® coil spring-type fork with speed-sensitive damping provides exceptional balance between handling and bump absorption, and now features a new hand operated compression clicker for toolless adjustments. The linkage-type rear suspension uses a KYB® shock with specially-tuned damping characteristics to match the WR450F chassis. New settings also result in a 10mm lower seat height than the YZ450F and lower center of gravity for improved cornering performance and rider comfort in technical sections.

The WR450F's new lightweight 18-inch rear wheel comes laced with a three-cross-spoke pattern for improved impact absorption and rider feel. Premium Excel rims and come wrapped in Dunlop® MX33 tires for an ideal balance of traction and durability.

A large 270mm front brake disc and 240mm rear are coupled with high performance Nissin calipers to provide exceptional stopping power and control. A new lightweight YZ450F-spec rear brake system sheds unsprung weight.

Redesigned fork seals improve seal life. The lip length has been increased and its excellent tracking properties prevent dust from entering the inner tube, thus reducing the potential for oil leaks.

A new slimmer, flatter and more compact body eases rider movement for improved control, including a flatter seat with more rounded edges, seamless side covers and more narrow shrouds. The rider triangle is also improved with increased legroom between the seat and footpegs, and revised handlebar position for a more natural posture and enhanced rider comfort.

The new WR450F features enduro-developed components including 2.0 gallon fuel capacity, multi-function meter with fuel and engine warning lights, 18-inch rear wheel, head and tail light, radiator fan, new skid plate, sealed O-ring chain, folding aluminum kickstand and an EPA-approved spark arrestor muffler

Premium embedded graphics are built into the bodywork for extended durability, resisting both peeling and damage.

For enhanced mass centralization, a new plastic fuel tank is adopted with larger lower portion and lower fuel pump location, while a smaller YZ450F-type shorty muffler brings weight more toward the center of the bike.

The WR450F boasts a wide range of additional top-spec details carried over from the competition-tested YZ450F including rubber-mounted, four-position adjustable handlebar clamps, aluminum tapered handlebars, new compact PVC handlebar pad, wide footpegs with lightened left-side bracket, new lightweight throttle cables, quick-adjust clutch perch, toolless air filter access, scratch-resistant geometric design clutch cover, and new multi-function switchgear.