Motocross Bikes
2018Honda CRF450RX
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The 2018 Honda CRF450RX is a dual-sport motorcycle designed for serious off-road enthusiasts seeking long-distance adventure capability. Known for its reliable electric-start 450cc engine, sturdy construction, and excellent ground clearance, it excels in mixed terrain riding from desert to trail. The bike balances competitive dirt bike performance with practical comfort features for extended backcountry exploration.
- Capacity
- 449.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 107.0 kg
- Seat height
- 960 mm
- Power
- 50.0 HP (36.8 kW)
What’s new for the 2018 Honda CRF450RX
vs the 2017| Spec | 2017 | 2018 |
|---|---|---|
| Wet weight | 118.4 kg (261.0 pounds) | 116.6 kg (257.1 pounds) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for cross-country and hard enduro-style off-road riding, with the durability and lighting/spark arrestor considerations typical of a closed-course and trail-legal race bike rather than street commuting.
- Built for
- It has the raw, high-strung feel of a factory-style motocross-derived engine tuned for tractable power delivery over rocks, roots, and trails, rewarding an aggressive, active riding style.
- Not ideal for
- This is not the right choice for new riders, commuters, highway travel, two-up riding, or anyone wanting a comfortable, low-maintenance daily street bike.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 449.0 ccm
- Power
- 50.0 HP (36.8 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.4673 HP/kg (dry)
- Bore x stroke
- 96.0 x 62.0 mm
- Compression
- 13.5:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric & kick
- Ignition
- Full transistorized with electronic advance
- Valves per cylinder
- 4
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multiplate wet, hydraulically actuated (6 springs, 8 plates)
Dimensions & weight
- Wheelbase
- 1476 mm
- Overall length
- 2182 mm
- Overall width
- 839 mm
- Overall height
- 1282 mm
- Seat height
- 960 mm
- Dry weight
- 107.0 kg
- Wet weight
- 116.6 kg
- Fuel capacity
- 8.30 litres
- Ground clearance
- 328 mm
- Reserve fuel capacity
- 1.60 litres
Chassis & suspension
- Frame
- Semi-double cradle, aluminium twin-spar
- Front suspension
- 49mm inverted Showa fork with rebound and compression damping adjustability
- Rear suspension
- Pro-Link® Showa single shock with adjustable spring preload, rebound and compression damping adjustability
- Front wheel travel
- 305 mm
- Rear wheel travel
- 312 mm
- Rake (fork angle)
- 27.2°
- Trail
- 116 mm
Brakes & wheels
- Front brakes
- Single disc. Two-piston calipers.
- Front brakes diameter
- 260 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 240 mm
- Front tyre
- 90/90-21
- Rear tyre
- 120/90-18
Other
- Color options
- Red
- Comments
- Model ID: CRF450RX.
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2017 | 2018 | 2020 | 2022 | 2025 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 450 cc | 450 cc |
| Dry weight | 107 kg | 107 kg | 107 kg | 107 kg | 107 kg | 103 kg |
| Seat height | 960 mm | 960 mm | 960 mm | 965 mm | 958 mm | 950 mm |
| Fuel capacity | 8.3 L | 8.3 L | 8.5 L | 8 L | 8 L | 7.2 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Honda CRF450RX?
The 2018 Honda CRF450RX has a Capacity of 449.0 ccm (27.40 cubic inches).
What engine power does the Honda CRF450RX have?
The 2018 Honda CRF450RX has a Power of 50.0 HP (36.8 kW).
How many gears does the Honda CRF450RX have?
The 2018 Honda CRF450RX has a Gearbox of 5-speed.
How much does the Honda CRF450RX weigh?
The 2018 Honda CRF450RX has a Dry weight of 107.0 kg (235.9 pounds).
Shop this bike
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The 2018 Honda CRF450RX is a top-of-the-line off-road motorcycle that delivers impressive performance and handling. Its powerful 449cc engine provides plenty of torque and acceleration, making it a great choice for riders who enjoy tackling challenging terrain. The bike's lightweight design and agile suspension system allow for nimble handling, while its durable construction makes it capable of withstanding the rigors of off-road riding. Overall, the CRF450RX is a reliable and versatile choice for serious off-road enthusiasts.
In addition to its impressive performance, the 2018 Honda CRF450RX also features a number of advanced technologies and ergonomic design elements that enhance the riding experience. The bike comes equipped with a sophisticated fuel injection system for optimal fuel efficiency and response, as well as electric start for added convenience. Its comfortable seating position and intuitive controls make it easy to handle, while its sleek and modern aesthetics give it a stylish and attractive appearance. Whether you're navigating tight trails or open desert terrain, the CRF450RX offers a thrilling off-road experience that is sure to impress.
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