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2023 Honda CRF450RX Overview
Honda CRF450RX is an enduro / off-road motorcycle, displacing 449 cc. Power comes from a Single cylinder, four-stroke engine running Single Overhead Cams (SOHC) valve actuation, a compression ratio of 13.5:1. Bore and stroke come in at 96 x 62.1 mm. On the road, the 2023 CRF450RX tips the scales at 113.9 kg, carries a 8-litre fuel tank, offers a seat height of 965 mm and spans a 1477 mm wheelbase. That's roughly 84.9 kg lighter than the average enduro / off-road motorcycle in our database. The full 2023 Honda CRF450RX spec sheet below covers every technical detail, from suspension travel to tyre sizes.
2023 CRF450RX - Pros & Cons
Strengths
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🔧
Fuel injection: Fuel injection means consistent cold starts and clean throttle response without the fussiness of a carbureted setup.
Considerations
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📏
Tall seat height: At 965 mm, shorter riders will likely be on tiptoes at a standstill - worth sitting on one before you buy.
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Modest fuel capacity: Range between stops is limited by the 8-litre tank - plan fuel stops accordingly on longer routes.
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Chain final drive upkeep: Budget time for routine chain maintenance - it's cheap to replace but needs consistent attention to avoid premature sprocket wear.
Wear Points & Servicing Notes
Fuelling & injector care
The fuel injection on the CRF450RX needs little beyond good fuel and periodic use of an injector-cleaner additive - no jetting or float-bowl maintenance to worry about.
Valve clearance checks
With Single Overhead Cams (SOHC) valve gear, the CRF450RX needs periodic clearance checks; caught early they're a cheap adjustment, left unchecked they accelerate valve seat wear.
Brake disc and pad wear
Braking up front comes from Single disc. Two-piston calipers. - solid stopping power, with disc and pad wear best checked on the same schedule as tyre changes.
Suspension condition on used examples
The CRF450RX's suspension runs 49mm inverted Showa fork with 13-position rebound and 15-position compression-damping adjustability at the front. The rear uses Pro-Link Showa single shock with adjustable spring preload, 11-position rebound and six-position high- and low-speed compression-damping adjustability. Fork-seal condition and rear linkage play are the two things worth checking before buying used.
Final drive maintenance
The CRF450RX uses chain final drive, which is cheap to replace but needs regular cleaning, lubrication and tension checks to get a full service life out of the sprockets.
Frame & chassis check
Built around a Aluminium twin tube, the CRF450RX's chassis is straightforward to inspect: look for corrosion, cracks or repair welds around stress points like the head-stock and swingarm mounts.
Low-speed handling
113.9 kg keeps the CRF450RX easy to move around in tight spaces, car parks and on the stand alike.
CRF450RX - Buying & Maintenance Guide
What to check before buying
Before handing over money for a used 2023 Honda CRF450RX, cover the fundamentals: service book and oil change history, chain and sprocket wear, and any sign of oil weeping around the casings. Cold-starting it yourself tells you a lot - a healthy CRF450RX should catch quickly and settle into a smooth idle.
Oil and filter changes
Nothing protects a CRF450RX's engine like disciplined oil changes - stay on the manufacturer's schedule (roughly every 6,000 km or annually). Match the viscosity grade to what the owner's manual specifies, not what's cheapest.
Fuel system care
Fuel injection on the CRF450RX needs little attention beyond decent fuel and an occasional system-cleaner additive. Anything left standing for three months or more should have its fuel drained and replaced before it varnishes the injectors.
Valve clearance service
Valve clearances are easy to overlook on a used CRF450RX since a bike out of spec doesn't always feel obviously wrong - but the wear it causes is real. Ask the seller for documentation before assuming it's been done.
2023 Honda CRF450RX - Frequently Asked Questions
What engine does the 2023 Honda CRF450RX have?
The 2023 Honda CRF450RX uses a Single cylinder, four-stroke engine with 449 cc of displacement.
How much does the 2023 Honda CRF450RX weigh?
The 2023 Honda CRF450RX weighs 113.9 kg. This is the manufacturer's wet figure.
What is the fuel tank capacity of the 2023 Honda CRF450RX?
The 2023 Honda CRF450RX has a 8-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 133-160 km between stops.
Is the 2023 Honda CRF450RX suitable for shorter riders?
The 2023 Honda CRF450RX has a seat height of 965 mm. This is towards the tall end of the spectrum and will require most riders under 175 cm to tiptoe at stops.
What brakes does the 2023 Honda CRF450RX have?
The 2023 Honda CRF450RX uses Single disc. Two-piston calipers. at the front and Single disc at the rear.
What tyre sizes does the 2023 Honda CRF450RX use?
The front tyre size on the 2023 Honda CRF450RX is 90/90-21.
What fuel system does the 2023 Honda CRF450RX use?
The 2023 Honda CRF450RX uses Injection. Programmed Fuel Injection (PGM-FI), providing precise fuelling across the rev range and reliable cold-start behaviour.
Honda CRF450RX Spec Evolution
The Honda CRF450RX was produced across 7 model years (2017-2023). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.
| Specification |
2017 |
2018 |
2019 |
2020 |
2021 |
2022 |
2023 |
| Wet Weight |
118.4 kg / 261.0 lbs |
116.6 kg / 257.0 lbs |
116.6 kg / 257.0 lbs |
115.7 kg / 255.0 lbs |
113.9 kg / 251.0 lbs |
113.9 kg / 251.0 lbs |
113.9 kg / 251.0 lbs |
| Engine Detail |
Titanium Intake Valves |
38mm intake valve, titanium; 31mm exhaust, steel |
38mm intake valve, titanium; 31mm exhaust, steel |
38mm intake valve, titanium; 31mm exhaust, steel |
38mm intake valve, titanium; 31mm exhaust, steel |
- |
- |
| Seat Height |
960 mm / 37.8 in. |
960 mm / 37.8 in. |
960 mm / 37.8 in. |
960 mm / 37.8 in. |
965 mm / 38.0 in. |
965 mm / 38.0 in. |
965 mm / 38.0 in. |
| Fuel Capacity |
8.33 litres / 2.20 gallons |
8.33 litres / 2.20 gallons |
8.52 litres / 2.25 US gallons |
8.52 litres / 2.25 US gallons |
7.95 litres / 2.10 US gallons |
8.00 litres / 2.11 US gallons |
8.00 litres / 2.11 US gallons |
| Ground Clearance (mm) |
328 mm |
328 mm |
328 mm |
328 mm |
335 mm |
336 mm |
336 mm |
| Ground Clearance (in.) |
12.9 inches |
12.9 inches |
12.9 inches |
12.9 inches |
13.2 inches |
13.2 inches |
13.2 inches |
| Comments |
Model ID: CRF450RX. |
Model ID: CRF450RX. |
Model ID: CRF450RX. |
Titanium fuel tank. Model ID: CRF450RX. |
Model ID: CRF450RX. |
3 ride modes. Model ID: CRF450RX. |
Model ID: CRF450RX. |
| Bore x Stroke (mm) |
96.0 x 62.0 mm |
96.0 x 62.0 mm |
96.0 x 62.0 mm |
96.0 x 62.0 mm |
96.0 x 62.0 mm |
96.0 x 62.1 mm |
96.0 x 62.1 mm |
Key Specifications
Engine
Single cylinder, four-stroke
Power
Not published by manufacturer
Torque
Not published by manufacturer
Top Speed
Not published by manufacturer
Weight
113.9 kg / 251.0 lbs
Fuel Capacity
8.00 litres / 2.11 US gallons
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Full 2023 Honda CRF450RX Specifications
Comments
Model ID: CRF450RX.
Colours
Red
Ground Clearance (mm)
336 mm
Ground Clearance (in.)
13.2 inches
Seat Height
965 mm / 38.0 in.
Wheelbase
1477 mm / 58.1 in.
Height
1282 mm / 50.5 in.
Length
2182 mm / 85.9 in.
Width
839 mm / 33.0 in.
Dry Weight
107 kg / 235.9 lbs
Fuel Capacity
8.00 litres / 2.11 US gallons
Wet Weight
113.9 kg / 251.0 lbs
Fuel Control
Single Overhead Cams (SOHC)
Engine Type
Single cylinder, four-stroke
Displacement (ci)
27.40 cubic inches
Displacement (cc)
449.0 cc
Bore x Stroke (mm)
96.0 x 62.1 mm
Bore x Stroke (in,)
3.8 x 2.4 inches
Fuel System
Injection. Programmed Fuel Injection (PGM-FI)
Compression Ratio
13.5:1
Ignition
DC-CDI
Starter
Electric
Valve System
4
Final Drive
Chain (final drive)
Gearbox
5-speed
Primary Drive
#520 Chain; 13T/50T
Frame Type
Aluminium twin tube
Suspension - Front
49mm inverted Showa fork with 13-position rebound and 15-position compression-damping adjustability
Suspension - Rear
Pro-Link Showa single shock with adjustable spring preload, 11-position rebound and six-position high- and low-speed compression-damping adjustability
Rake
27.1°
Trail
114 mm / 4.5 in.
Wheel Travel - Front
310 mm / 12.2 in.
Wheel Travel - Rear
315 mm / 12.4 in.
Brakes - Front
Single disc. Two-piston calipers.
Brakes - Rear
Single disc
Rims
Dunlop Geomax AT81 tires. Aluminium rims, spoked.
Tyres - Front
90/90-21
Specifications are compiled from manufacturer documentation and cross-referenced
technical sources, and corrected on an ongoing basis.
Spot an error? Let us know.
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