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2021 Honda CRF 300L Overview
The 2021 Honda CRF 300L is a cross / motocross motorcycle built around 286 cc of displacement. Under the tank sits a Single cylinder, four-stroke engine running Double Overhead Cams/Twin Cam (DOHC) valve actuation, a compression ratio of 10.7:1. 2021 Honda CRF 300L delivers 27 hp @ 8500rpm of peak power and 26.6 Nm @ 6500rpm of torque. From a practical standpoint, the 2021 CRF 300L tips the scales at 142 kg, carries a 7.8-litre fuel tank, offers a seat height of 880 mm and spans a 1455 mm wheelbase. Scroll down for the complete 2021 Honda CRF 300L spec sheet covering every technical detail from suspension travel to tyre sizes.
2021 CRF 300L - Pros & Cons
Strengths
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Strong power output: 2021 Honda CRF 300L makes 27 hp @ 8500rpm with 26.6 Nm @ 6500rpm of torque - competitive figures for its class.
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Fuel injection: The fuel injection injection system delivers crisp throttle response and reliable cold starts regardless of altitude or temperature.
Considerations
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Tall seat height: The 880 mm seat height will challenge shorter riders - tiptoeing at low speeds is something to factor into your decision.
Owner Experiences & Common Issues
Throttle response and fuelling
The fuel injection on the 2021 Honda CRF 300L is generally well-regarded. Some owners note a slight hesitation at small throttle openings when cold, which clears once the engine reaches operating temperature. A quick visual check of the injector connectors during routine servicing is good practice on higher-mileage examples.
Valve clearance checks
Double Overhead Cams/Twin Cam (DOHC) engines should have valve clearances checked at the manufacturer's specified interval. Owners report that clearances can tighten over time on higher-mileage bikes, leading to slight ticking from the top end. Catching it early keeps the job simple and avoids more costly remediation.
CRF 300L - Buying & Maintenance Guide
What to check before buying
When inspecting a used 2021 Honda CRF 300L, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained CRF 300L should fire up cleanly and settle to a smooth idle within a few seconds.
Oil and filter changes
Regular oil changes are the single most important maintenance task on any CRF 300L. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. The sump holds 1.80 litres, so budget for that volume of quality motorcycle-specific engine oil. Always use the correct viscosity grade as specified in the owner's manual.
Fuel system care
The CRF 300L's fuel injection system is durable but benefits from quality fuel and the occasional use of a fuel-system cleaner additive. If the bike has been stored for more than three months, drain and replace the fuel to prevent varnish deposits in the injectors.
Valve clearance service
Check that valve clearances have been adjusted at the correct intervals on any used CRF 300L. This is a job many owners skip because the bike does not immediately feel wrong - but tight clearances accelerate valve seat wear. Ask for proof it has been done.
2021 Honda CRF 300L - Frequently Asked Questions
What engine does the 2021 Honda CRF 300L have?
The 2021 Honda CRF 300L uses a Single cylinder, four-stroke engine with 286 cc of displacement. It is liquid cooled.
How much does the 2021 Honda CRF 300L weigh?
The 2021 Honda CRF 300L weighs 142 kg. This is the manufacturer's wet figure.
How much power does the 2021 Honda CRF 300L make?
The 2021 Honda CRF 300L produces 27 hp @ 8500rpm of power and 26.6 Nm @ 6500rpm of torque. These are peak figures.
What is the fuel tank capacity of the 2021 Honda CRF 300L?
The 2021 Honda CRF 300L has a 7.8-litre fuel tank.
Is the 2021 Honda CRF 300L suitable for shorter riders?
The 2021 Honda CRF 300L has a seat height of 880 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 2021 Honda CRF 300L have?
The 2021 Honda CRF 300L uses Single 256mm disc 2 piston caliper at the front and Single 220mm disc 1 piston caliper at the rear.
What tyre sizes does the 2021 Honda CRF 300L use?
The 2021 Honda CRF 300L runs 80/100-21M/C 51P front and 120/80-18M/C 62P rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.
What gearbox does the 2021 Honda CRF 300L have?
The 2021 Honda CRF 300L is fitted with a 6 Speed transmission.
How much oil does the 2021 Honda CRF 300L take?
The 2021 Honda CRF 300L takes 1.80 litres of engine oil at a full oil and filter change. Always verify against the dipstick or sight glass after filling.
Honda CRF 300L Spec Evolution
The Honda CRF 300L was produced across 4 model years (2021-2025). 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 |
2021 |
2022 |
2023 |
2025 |
| Wet Weight |
142 kg / 313 lbs |
142.0 kg / 313.1 lbs |
142 kg / 313 lbs |
142 kg / 313 lbs |
| Engine Detail |
Four stroke single cylinder, DOHC, 4 valves |
33mm intake valve, titanium; 26mm exhaust, titanium |
Four stroke single cylinder, DOHC, 4 valves |
Four stroke single cylinder, DOHC, 4 valves |
| Seat Height |
880 mm / 34.6 in |
881 mm / 34.7 in. |
880 mm / 34.6 in |
880 mm / 34.6 in |
| Fuel Capacity |
7.8 Litres / 2 US gal |
7.80 litres / 2.06 US gallons |
7.8 Litres / 2 US gal |
7.8 Litres / 2 US gal |
| Comments |
Model ID: CRF300R |
Model ID: CRF300L. |
Model ID: CRF300L. |
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| Wheelbase |
1455 mm / 57.2 in |
1455 mm / 57.3 in. |
1455 mm / 57.2 in |
1455 mm / 57.2 in |
| Brakes - Front |
Single 256mm disc 2 piston caliper |
Single disc. Two-piston calipers. ABS. |
Single 256mm disc 2 piston caliper |
Single 256mm disc 2 piston caliper |
| Brakes - Rear |
Single 220mm disc 1 piston caliper |
Single disc. ABS. |
Single 220mm disc 1 piston caliper |
Single 220mm disc 1 piston caliper |
Key Specifications
Engine
Single cylinder, four-stroke
Power
27 hp / 20.1 kW @ 8500rpm
Torque
26.6 Nm / 19.6 lb-ft @ 6500rpm
Fuel Capacity
7.8 Litres / 2 US gal
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Full 2021 Honda CRF 300L Specifications
Comments
Model ID: CRF300R
Year
2021
Colours
Red/blue/white
Make Model
Honda CRF 300L
Ground Clearance (mm)
285 mm
Ground Clearance (in.)
11.2 inches
Seat Height
880 mm / 34.6 in
Wheelbase
1455 mm / 57.2 in
Ground Clearance
285 mm / 11.2 in
Height
1200 mm / 47.2 in
Length
2230 mm / 87.7 in
Width
820 mm / 32.2 in
Oil Capacity (Quarts)
1.9 US quarts
Oil Capacity (l)
1.80 litres
Fuel Capacity
7.8 Litres / 2 US gal
Wet Weight
142 kg / 313 lbs
Fuel Control
Double Overhead Cams/Twin Cam (DOHC)
Engine Type
Single cylinder, four-stroke
CO2
71.9 CO2 g/km. (CO2 - Carbon dioxide emission)
Displacement
286 cc / 17.4 cu-in
Engine Detail
Four stroke single cylinder, DOHC, 4 valves
Fuel System
Injection. Programmed Fuel-Injection system (PGM-FI); 44mm throttle bore
Bore x Stroke
76 x 63 mm
Compression Ratio
10.7:1
Cooling System
Liquid cooled
Emissions
EURO5
Fuel Consumption
3.10 litres/100 km (32.3 km/l or 75.88 mpg)
Fuel Induction
PGM-FI electronic fuel injection
Ignition
Full transistor digital
Lubrication
Wet sump
Starter
Electric
Valve System
4
Clutch
Wet multiplate, assist/slipper clutch
Final Drive
#520 chain
Gearbox
6-speed
Transmission / Drive
6 Speed
Frame Type
Steel semi-double cradle
Suspension - Front
43mm Telescopic USD forks
Suspension - Rear
Pro-Link single shock with spring
Rake
27.5°
Trail
109 mm / 4.3 in
Wheel Travel - Front
305 mm / 12.0 in.
Wheel Travel - Rear
315 mm / 12.4 in.
Brakes - Front
Single 256mm disc 2 piston caliper
Brakes - Rear
Single 220mm disc 1 piston caliper
ABS
2 channel ABS
Rims
Aluminium spoked
Tyres - Front
80/100-21M/C 51P
Tyres - Rear
120/80-18M/C 62P
Wheels
Aluminium spoke
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