Developed for trail enthusiasts and competitive racers alike, Honda's CRF450X is the perfect machine for off-road adventures. The winningest bike ever in the Baja 1000 (17 victories, including SLR Honda's victory in the 2024 edition), this versatile machine is also right at home in regional off-road parks. The bike's 50-state off-road legal status and renowned reliability combines with trail-ready features like an 18-inch rear wheel, sealed chain, headlight, side stand, and a six-speed transmission to make it the ultimate all-around dirt bike.
HISTORY
First introduced for the 2005 model year, the CRF450X continued Honda's proud pedigree of large-displacement off-road machines, including legendary machines like the XR600R and the XR650R. Based loosely on the CRF450R motocross platform, the original "X" was nonetheless developed specifically for off-road use. Updates for 2008 included the addition of a Honda Progressive Steering Damper, as well as the switch to a smaller fuel tank. A complete overhaul took place for 2019, including the adoption of fuel injection, updated bodywork and a new chassis.
STYLING / DESIGN
The CRF450X is pure off-road, and it looks the part, with a design that reflects the style of its CRF450R motocross cousin, but with rugged touches that are appropriate for the trail. The lightweight 2.0-gallon fuel tank features a cap with a cut-off valve, minimizing spillage when the bike is tipped over. Fork guards fend off damage from rocks and bushes, and long-lasting in-mold graphics resist peeling or fading. A gray-metallic Renthal® handlebar is standard, as is a red crossbar pad.
The model has features designed for durability, comfort and performance on long, challenging rides, including lightweight plastic handguards to shield against trailside brush and shrubs, an aluminum side stand that simplifies trailside breaks but folds out of the way when not in use, and a halogen headlight and LED taillight for night riding. A lightweight lithium-ion battery offers increased capacity over the CRF450R, in order to power the lighting, and an easily accessible electronic-component box on the left side of the frame is convenient for maintenance. The digital meter features a clear, compact design with legible black characters on a white LCD background ensuring readability in varying conditions.
ENGINE / DRIVETRAIN
The CRF450X's 449.7cc Unicam® engine has bore and stroke measurements of 96.0mm and 62.1mm, respectively, and finger-follower rocker arms on the inlet valves contribute to the compact layout. Tuned for off-road-appropriate power characteristics, the engine features a DLC surface treatment on the rocker arms, minimizing friction. The dedicated valve timing ensures smooth power delivery, particularly in technical riding conditions, while the engine's high crank inertia maximizes control in challenging terrain. With a 12.0:1 compression ratio and a three-ring piston design, the power plant is built for durability and reliability.
To handle everything from tight, technical trails to high-speed fire roads, the model features a wide-ratio, six-speed transmission that is produced from high-strength materials for resilience in demanding conditions. A special clutch design enables a light lever pull, while a primary-damper mechanism with friction springs helps suppress engine-torque fluctuations, for smooth running. Large-capacity radiators offer superior heat-exchange efficiency, keeping the engine cool in demanding off-road scenarios. The ECU is programmed with settings tailored to off-road riding, and the specially designed exhaust system, with an optimized pipe length and diameter, ensures excellent responsiveness at low rpm. An off-road-ready, emissions-compliant muffler with a USFS-approved spark arrestor makes the CRF450X 50-state off-road legal.
CHASSIS / SUSPENSION
The light, strong aluminum twin-spar frame was designed for both nimble handling and stable control across a variety of off-road terrain. The 49mm inverted Showa inverted fork has 12.0 inches of travel and is specifically tuned for challenging trails. The Pro-Link® rear-suspension system has a single Showa shock absorber and delivers 11.8 inches of travel.
Front-brake duties are handled by a two-piston caliper and a 260mm petal-style rotor, while a single-piston rear caliper works a 240mm petal-style rotor. In both cases, the braking is powerful enough to ensure good stopping performance from high speeds, but also controlled enough to deliver the precise feel needed when navigating technical trails.
An endless sealed chain is used to withstand sustained abuse in the toughest elements, and the front and rear sprockets both feature dampers that minimize noise and ensure smooth running. Dunlop MX52 tires are mounted front and rear and are suitable for a wide variety of terrain types, while the 18-inch rear wheel allows for a tall tire sidewall to optimize traction in technical conditions.
