New Honda CRF450L

The best of both worlds

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Overview


The journey from full race to road legal trail was a detailed one for the CRF450L. Road legality required the engine to gain EURO4 compliance, while from a longevity and usability viewpoint, the power output and character, needed careful attention.

It’s still a CRF450R; just one that’s quieter, both mechanically from the chassis and engine, as well as its new exhaust. Both fuelling and ignition maps are now managed by 02 lambda sensor; compression ratio has been lowered and crank mass increased for improved drivability. The gearbox is a 6-speed – for longer legs on the road – and a cush drive has been added to the 18-inch rear wheel.

The plastics are lifted directly from the CRF450R and all lighting is LED, with the front headlight in particular throwing out a penetrating beam. Increased volume for the titanium fuel tank adds range and all the items that make the CRF450L ready to purchase as a licensed, road going machine – such as speedometer and horn – are present as standard.

While the chassis was more straightforward to convert from its CRF450R moto-crosser specification to a dual-purpose performance level, the 449cc engine needed more consideration from Honda’s engineers. Requirements were several: the need for it to pass EURO4 emissions and noise regulations, and to be usable for a wide variety of riders in many differing situations both on and off-road.

While the fundamental architecture of the four-valve Unicam powerplant remains the same, many details have been changed to support the broader role: the crank’s mass has been increased, resulting in 13% more inertia which, for a trail rider, equals improved torque feel and response; valve timing has been revised to give the broader, smoother spread of power and torque; the gearbox is now 6-speed, rather than 5 for longer range use on tarmac; left and right engine covers wear outer covers to reduce noise.

Elsewhere, the ACG has been uprated, to provide the required electrical power for the LED lights and to maintain battery charge during lower-speed running. The battery itself is a high-volume unit.

Bore and stroke are unchanged from the CRF450R, at 96mm x 62.1mm, but the piston uses 3 rings instead of 2 for greater durability. Compression ratio is 12.0:1 (compared 13.5:1). The redesigned airbox feeds the PGM-FI, managed by a lambda sensor in the large-volume single exhaust (which replaces the ‘stubby’ dual-pipe design of the CRF450R). An Air Injection (AI) system and catalyser clean up the spent gases.

The four-valve Unicam cylinder head features a finger rocker arm on the inlet valves; valve lift is 7.7mm with 6.7mm exhaust valve lift. Inlet valve diameter is 38mm. The valve springs are oval in cross section and valve angle is 9° intake/10.5° exhaust.

The clutch spins 7 friction discs with a 2mm clutch plate efficiently dissipating heat; the springs generate a good, consistent connection. The front sprocket is a 13T, the rear 51T.

Peak power is 18.4kW, with peak torque of 32Nm. Important from the hobby trail-rider’s perspective is the engine’s reliability and gap between service intervals. And this is where the CRF450L’s build quality and design really stands out; it will go 32,000km between major strip downs, with an air filter oil and oil filter change every 1000km.

The CRF450L’s style draws fully on that of the CRF450R. Carried over are the rear mudguard, side panels and bash plate. Svelte side shrouds hide a larger radiator volume plus electric fan. All lighting (including the indicators and license-plate light) is LED; a speedometer, horn, brake-light switch and mirrors satisfy legal requirements while a side stand adds convenience. The CRF450R employs a 6.3L titanium fuel tank; the CRF450L ups the volume 1.3L to 7.6L. The fuel cap also locks in place.

Having received a ground-up redesign in 2016, the CRF450R’s chassis was a perfect place for the CRF450L to start out from, with changes to match the machine’s vastly broader usage range, and road legal mission.

Firstly, the tapered dual-spar aluminium beam frame was made slightly wider at the swingarm pivot points, to allow for the greater engine width resulting from the 6-speed gearbox. The headstock was modified to mount a steering lock and the aluminium swingarm injected with urethane to reduce noise. The rear sub frame is the same, with mounting point adjusted to take the taillight and the right-exit single exhaust muffler.

Rake and trail are set at 28.5°/122mm with wheelbase increased 18mm from the CRF450R to 1500mm, for greater stability. Both the R and the L feature 22mm fork offset. Wet weight is 130.8kg; seat height is 940mm.

A 49mm Showa steel-sprung USD fork – adjustable for preload plus compression damping – is matched by a fully adjustable Showa rear shock, operated through Pro-Link. A 260mm wave-pattern disc delivers effective heat dissipation, power and feels from the two-piston brake calliper working it; a matching 240mm wave-pattern disc and single-piston calliper is at the rear.

Whereas the CRF450R machine uses a 19-inch rear wheel, the CRF450L’s is an 18-inch (to fit enduro-spec tyres), with the addition of a cush drive to absorb chain shock; a sealed 520 chain is protected by a plastic chain guard. The front wheel is a 21-inch and both rims are finished in black. Tyres are sized 80/100-21 front and 120/80-18 rear.


Colour Options


Extreme Red

Extreme Red


Licence Requirement

To ride the CRF450L, you will need an A licence.

With an A licence you can ride unrestricted motorcycles in size and power, with or without a sidecar, and motor tricycles with power output over 15 kW.

To take the direct access route, you must at least be 24 years old. If you decide the progressive access route, you must have held an A2 licence for a minimum of 2 years. The minimum age for this route is 21 or over.

Terms & Conditions 

All information on the licence required to ride the bikes are correct at time of publication but may be subject to change. We endeavour to maintain accurate information, however cannot guarantee the details to be accurate all the time due to legislation changes. Cox Motor Group and North West Honda accepts no liability for any misrepresentation and recommends that the individual dealer be contacted to confirm the licence required to ride the bike.



Specifications

Bore × Stroke (mm)96.0mm x 62.1mm
CarburationPGM-FI Fuel injection
Compression Ratio12.0:1
Engine Displacement (cc)449cc
Engine Type (cm³)Liquid-cooled 4-stroke single cylinder uni-cam
StarterElectric
ClutchWet type multi-plate
Final DriveChain
Caster Angle28.5°
Dimensions (L×W×H) (mm)2,280mm x 825mm x 1,260mm
Frame typeAluminium twin tube
Fuel Tank Capacity (Litres)7.6 litres
Ground Clearance (mm)315mm
Kerb Weight (kg)130.8kg
Seat Height (mm)940mm
Trail (mm)122mm
Wheelbase (mm)1500mm
Brakes FrontSingle Disk
Brakes RearSingle Disk
Suspension Front49mm Showa steel-sprung USD fork
Suspension RearShowa monoshock using Honda Pro-Link system
Tyre Size Front80/100-21
Tyre Size Rear120/80-18
Wheels FrontAluminium spoke
Wheels RearAluminium spoke
Ignition SystemDigital CDI


CRF450L brochure

Online brochures coming soon. Try again at a later date or contact us.


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