2024 Yamaha WR450F

Chassis / Suspension

• ALUMINUM BILATERAL BEAM FRAME: 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 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.
• CLASS-LEADING SUSPENSION: 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 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. 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.
• ENDURO WHEELS: The WR450F's 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.
• HIGH PERFORMANCE BRAKING SYSTEM: A large 270mm front brake disc and 240mm rear are coupled with high performance Nissin calipers to provide exceptional stopping power and control. A lightweight YZ450F-spec rear brake system sheds unsprung weight.
• STRONGER FORK SEALS: 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.
• SLIMMER BODY & IMPROVED ERGOS: A 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.

Engine

• ADVANCED FUEL INJECTION: 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.
• 450CC FOUR-STROKE ENGINE: The 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 exhaust and intake port shapes, larger diameter titanium intake valves, 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.
• ELECTRIC STARTER SYSTEM: 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.
• COMPACT LIGHTWEIGHT CLUTCH: The clutch design replaces the coil springs of the previous model with a 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.
• TRACTION CONTROL SYSTEM: A 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.
• WIDE-RATIO FIVE-SPEED TRANSMISSION: 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 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.

New For 2024

• 450CC FOUR-STROKE ENGINE: Lighter, more compact with increased power across the entire rev range, the 450cc engine runs revised ECU settings that also enhance low-end tractability.
• ALUMINUM BILATERAL BEAM FRAME: 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.
• LIGHTWEIGHT REAR WHEEL ASSEMBLY: A three-spoke pattern joins the blue anodized Excel rim to a lighter hub, and a YZ450F-spec rear brake system sheds further weight. The rear wheel axle is wider in diameter for enhanced ride feedback.
• COMPACT LIGHTWEIGHT CLUTCH: A 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.
• WIDE-RATIO FIVE-SPEED TRANSMISSION: All 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.
• REVISED SUSPENSION WITH TOOLLESS FORK ADJUSTMENT: 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 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.
• SLIMMER BODY & IMPROVED ERGOS: A 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.

Other Features

• DESIGNED FOR ENDURO: The 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, skid plate, sealed O-ring chain, folding aluminum kickstand and an EPA-approved spark arrestor muffler.
• EMBEDDED GRAPHICS: Premium embedded graphics are built into the bodywork for extended durability, resisting both peeling and damage.
• FOCUS ON MASS CENTRALIZATION: For enhanced mass centralization, a 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.
• HIGH PERFORMANCE DETAILS: 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, compact PVC handlebar pad, wide footpegs with lightened left-side bracket, lightweight throttle cables, quick-adjust clutch perch, toolless air filter access, scratch-resistant geometric design clutch cover, and multi-function switchgear.

Top Features

• ALUMINUM BILATERAL BEAM FRAME: 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.
• CLASS-LEADING SUSPENSION: 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 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. 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.
• HIGH PERFORMANCE BRAKING SYSTEM: 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 YZ450F-spec rear brake system sheds further weight.
• HIGH PERFORMANCE 450CC FOUR-STROKE ENGINE: The completely redesigned 450cc liquid-cooled DOHC four-stroke engine is lighter, more compact and features stronger pulling power across the entire rev range.
• SLIMMER BODY & IMPROVED ERGOS: A 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 ULTIMATE OPEN CLASS ENDURO RACER: Based on the benchmark-setting YZ450F motocrosser, the 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, chassis, wide-ratio transmission, lightweight rear wheel and brake system, and more, the 2024 WR450F is ready to tackle the toughest off-road conditions.