2005 Yamaha WR 450F Specifications

Name: 2005 Yamaha WR 450F
Brand: Yamaha

Enduro / Off-Road • Specs last verified 13 July 2026

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2005 Yamaha WR 450F Overview

The 2005 Yamaha WR 450F is an enduro / off-road motorcycle built around 449 cc of displacement. Under the tank sits a Four stroke, single cylinder, DOHC, 5 titanium valve per cylinder engine, a compression ratio of 12.5:1. 2005 Yamaha WR 450F delivers 58 hp @ 9000 rpm of peak power and 49 Nm @ 7000 rpm of torque. From a practical standpoint, the 2005 WR 450F tips the scales at 122 kg, carries a 8-litre fuel tank, offers a seat height of 998 mm and spans a 1485 mm wheelbase. That's roughly 76.8 kg lighter than the average enduro / off-road motorcycle in our database. Scroll down for the complete 2005 Yamaha WR 450F spec sheet covering every technical detail from suspension travel to tyre sizes.

2005 WR 450F - Pros & Cons

Strengths

Strong power output: 2005 Yamaha WR 450F makes 58 hp @ 9000 rpm with 49 Nm @ 7000 rpm of torque - competitive figures for its class.

Considerations

Tall seat height: The 998 mm seat height will challenge shorter riders - tiptoeing at low speeds is something to factor into your decision.
Modest fuel capacity: The 8-litre tank means more frequent fuel stops on longer rides, which is worth planning around on touring routes.
Chain final drive upkeep: Chain final drive needs regular cleaning, lubrication and tension checks to get full life out of the sprockets.

Wear Points & Servicing Notes

Cooling system servicing

The Liquid cooled system on the WR 450F needs a coolant change roughly every two years (or per the service schedule) - skipping it lets the coolant turn acidic and corrode the aluminium water passages over time.

Brake disc and pad wear

The Single 250mm disc 4 piston caliper front brake gives strong, progressive stopping power. Disc thickness and pad depth are worth checking at every tyre change, since worn pads can score the disc surface.

Suspension condition on used examples

Up front, the WR 450F runs 46mm Kayaba inverted telescopic fork, compression and rebound damping adjustable and Fully adjustable Kayaba single shock, 315mm wheel travel, separate speed compression adjustment at the rear. On a used example, check fork seals for weeping oil and test the rear linkage for play - seals are a relatively cheap fix but useful when negotiating price.

Final drive maintenance

Final drive is by chain - expect to clean and lube it every few hundred kilometres and check tension regularly; a neglected chain wears the sprockets faster than the chain itself.

Frame & chassis check

The frame is Steel, Single cradle frame - worth a visual check for corrosion or impact damage around the head-stock and swingarm pivot on any used example, since frame damage is far costlier to fix than any service item.

Low-speed handling

At just 122 kg, the WR 450F is light enough to manhandle easily at a standstill - one of the practical advantages of its class.

WR 450F - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2005 Yamaha WR 450F, 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 WR 450F 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 WR 450F. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. Always use the correct viscosity grade as specified in the owner's manual.

Carburetor upkeep

Keep the carburetors clean and free of deposits. If the WR 450F has been stored, strip and clean the carb float bowls before attempting to start it. Pilot jets are the first to block and the last to be checked - always include them in any carb rebuild.

2005 Yamaha WR 450F - Frequently Asked Questions

What engine does the 2005 Yamaha WR 450F have?

The 2005 Yamaha WR 450F uses a Four stroke, single cylinder, DOHC, 5 titanium valve per cylinder. engine with 449 cc of displacement. It is liquid cooled.

How much does the 2005 Yamaha WR 450F weigh?

The 2005 Yamaha WR 450F weighs 122 kg. This is the manufacturer's wet figure.

How much power does the 2005 Yamaha WR 450F make?

The 2005 Yamaha WR 450F produces 58 hp @ 9000 rpm of power and 49 Nm @ 7000 rpm of torque. These are peak figures.

What is the fuel tank capacity of the 2005 Yamaha WR 450F?

The 2005 Yamaha WR 450F has a 8-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 133-160 km between stops.

Is the 2005 Yamaha WR 450F suitable for shorter riders?

The 2005 Yamaha WR 450F has a seat height of 998 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 2005 Yamaha WR 450F have?

The 2005 Yamaha WR 450F uses Single 250mm disc 4 piston caliper at the front and Single 245mm disc 2-piston caliper at the rear.

What tyre sizes does the 2005 Yamaha WR 450F use?

The 2005 Yamaha WR 450F runs 80/100-21 front and 110/100-18 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What gearbox does the 2005 Yamaha WR 450F have?

The 2005 Yamaha WR 450F is fitted with a 5 Speed transmission.

Yamaha WR 450F Spec Evolution

The Yamaha WR 450F was produced across 9 model years (2004-2024). 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	2004	2006	2008	2010	2012	2014	2016	2018	2024
Max Power	58 hp / 42.3 kW @ 9000 rpm	58 hp / 42.3 kW @ 9000 rpm	58 hp / 42.3 kW @ 9000 rpm	58 hp / 42.3 kW @ 9000 rpm	58 hp / 42.3 kW @ 9000 rpm	58 hp / 42.3 kW @ 9000 rpm	58 hp / 42.3 kW @ 9000 rpm	NA	NA
Wet Weight	122 kg / 268 lbs	122 kg / 268 lbs	122 kg / 268 lbs	122 kg / 268 lbs	122 kg / 268 lbs	122 kg / 268 lbs	122 kg / 268 lbs	123 kg / 271 lbs	117 kg / 258 lbs
Dry Weight	112.5 kg / 248 lbs	112.5 kg / 248 lbs	112.5 kg / 248 lbs	112.5 kg / 248 lbs	112.5 kg / 268 lbs	112.5 kg / 268 lbs	112.5 kg / 268 lbs	-	-
Engine Detail	Four stroke, single cylinder, DOHC, 5 titanium valve per cylinder.	Four stroke, single cylinder, DOHC, 5 titanium valve per cylinder.	Four stroke, single cylinder, DOHC, 5 titanium valve per cylinder.	Four stroke, single cylinder, DOHC, 5 titanium valve per cylinder.	Four stroke, Single cylinder, DOHC, 5 valves	Four stroke, Single cylinder, DOHC, 5 valves	Four stroke, Single cylinder, DOHC, 5 valves	Four stroke, Single cylinder, DOHC, 4 titanium valves	Four stroke, Single cylinder, DOHC, 4 titanium valves
Seat Height	998 mm / 39.3 in	998 mm / 39.3 in	998 mm / 39.3 in	998 mm / 39.3 in	960 mm / 37.8 in	960 mm / 37.8 in	960 mm / 37.8 in	965 mm / 38. in	955 mm / 37.6 in
Fuel Capacity	8 Liters / 2.1 US gal	8 Liters / 2.1 US gal	8 Liters / 2.1 US gal	8 Liters / 2.1 US gal	7.2 Litres / 1.9 US gal	7.2 Litres / 1.9 US gal	7.2 Litres / 1.9 US gal	7.5 Litres / 2.0 US gal	7.4 Litres / 2.0 US gal
Frame Type	Steel, Single cradle frame	Steel, Single cradle frame	Steel, Single cradle frame	Steel, Single cradle frame	Aluminium bilateral beam	Aluminium bilateral beam	Aluminium bilateral beam	Aluminium bilateral beam	Control Fill Aluminium bilateral beam
Displacement	449 cc / 27.4 in	449 cc / 27.4 in	449 cc / 27.4 in	449 cc / 27.4 in	449 cc / 27.4 cu in	449 cc / 27.4 cu in	449 cc / 27.4 cu in	449 cc / 27.4 cu in	449 cc / 27.4 cu in

Key Specifications

Engine

Four stroke, single cylinder, DOHC, 5 titanium valve per cylinder.

Power

58 hp / 42.3 kW @ 9000 rpm

Torque

49 Nm / 33.1 lb-ft @ 7000 rpm

Top Speed

Not published by manufacturer

Weight

122 kg / 268 lbs

Fuel Capacity

8 Liters / 2.1 US gal

Full 2005 Yamaha WR 450F Specifications

Year 2005 - 06

Make Model Yamaha WR 450F

Seat Height 998 mm / 39.3 in

Wheelbase 1485 mm / 58.5 in

Ground Clearance 365 mm / 14.3 in

Height 1300 mm / 51.2 in

Length 2175 mm / 85.6 in

Width 825 mm / 32.5 in

Dry Weight 112.5 kg / 248 lbs

Fuel Capacity 8 Liters / 2.1 US gal

Wet Weight 122 kg / 268 lbs

Max Power 58 hp / 42.3 kW @ 9000 rpm

Max Torque 49 Nm / 33.1 lb-ft @ 7000 rpm

Displacement 449 cc / 27.4 in

Engine Detail Four stroke, single cylinder, DOHC, 5 titanium valve per cylinder.

Bore x Stroke 95 x 63.4 mm

Compression Ratio 12.5:1

Cooling System Liquid cooled

Fuel Induction 39mm Keihin FCR flat-slide throttle position sensor

Ignition Digital CDI

Lubrication Wet Sump

Starter Electric / Kick-starter

Clutch Wet, multiple discs, cable operated

Final Drive "O" ring Chain

Transmission / Drive 5 Speed

Frame Type Steel, Single cradle frame

Suspension - Front 46mm Kayaba inverted telescopic fork, compression and rebound damping adjustable

Suspension - Rear Fully adjustable Kayaba single shock, 315mm wheel travel, separate speed compression adjustment

Wheel Travel - Front 300 mm / 11.8 in

Wheel Travel - Rear 318 mm / 12.4 in

Brakes - Front Single 250mm disc 4 piston caliper

Brakes - Rear Single 245mm disc 2-piston caliper

Tyres - Front 80/100-21

Tyres - Rear 110/100-18

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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WR 450F Years

2014 2008 2006

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Yamaha WR 450F - other years

2014 2008 2006

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