Specs

From the dealer's page

Key Specifications & Changes Weight: 238 lbs curb weight (225–226 lbs dry weight), making it roughly 9 to 10 pounds lighter than the 2026 model. Engine: 449.5cc liquid-cylinder single-cylinder four-stroke with Unicam SOHC 4-valve layout, 97.0mm x 60.8mm bore and stroke, and a 13.8:1 compression ratio. Power Output: Produces roughly 61 horsepower (a 10% to 12% increase over the previous generation) and around 37+ ft-lbs of torque. Chassis & Frame: Features a 70% redesigned frame and increased torsional/longitudinal rigidity, a longer wheelbase (58.7 inches), and more neutral, stable handling geometry inspired by factory MXGP race programs. Clutch: All-new smaller-diameter hydraulic clutch system with an integrated rubber-damper-activated back-torque-limiting (slipper) function. Suspension: 49宁 inverted Showa spring fork with Kashima coating (12.2 inches of travel) and a Pro-Link Showa single shock (12.0 inches of travel). Exhaust & Sound: Optimized header and muffler layout designed to comply with stricter AMA/FIM 109-decibel racing limits while boosting power. Fuel Capacity: Expanded to 1.9 gallons.