2024 YAMAHA WR450F, 2024 YAMAHA WR450F

All-New 450cc Four-Stroke Engine

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.

All-New 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 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.

New Compact Lightweight Clutch

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.

New Wide-Ratio Five-Speed Transmission

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.

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 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.

Slimmer Body & Improved Ergos

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.

Specification:

ENGINE

• Engine Type - 450cc liquid-cooled DOHC 4-stroke; 4 titanium valves
• Bore x Stroke - 97.0mm × 60.8mm
• Compression Ratio - 13.0:1
• Fuel Delivery - Mikuni®