2008 Suzuki RM-Z450 Specifications

Name: 2008 Suzuki RM-Z450
Brand: Suzuki

Cross / motocross • Specs last verified 13 July 2026

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2008 Suzuki RM-Z450 Overview

For 2008, Suzuki offers the RM-Z450 as a cross / motocross motorcycle with 449 cc on tap. The 2008 Suzuki RM-Z450 is built around a Single cylinder engine running DOHC valve actuation, a compression ratio of 12.2:1. Internally, bore and stroke are 96 x 62.1 mm. In everyday use, the 2008 RM-Z450 tips the scales at 101.5 kg, carries a 6.20-litre fuel tank, offers a seat height of 955 mm and spans a 1,480 mm wheelbase. Every technical detail, from suspension travel to tyre sizes, is covered in the full 2008 Suzuki RM-Z450 spec sheet below.

2008 RM-Z450 - Pros & Cons

Strengths

Fuel injection: No choke, no jetting, no altitude compensation to think about - fuel injection just works across a wider range of conditions than carburetion.

Considerations

Tall seat height: A 955 mm seat puts flat-footing out of reach for a lot of riders - sit on it in person before committing.
Modest fuel capacity: A 6.20-litre tank keeps things light but means budgeting for more frequent fuel stops on any longer ride.
Chain final drive upkeep: A chain drivetrain is the most common setup in its class, but it's also the one that demands the most regular hands-on maintenance.

Wear Points & Servicing Notes

Fuelling & injector care

Fuelling on the RM-Z450 comes from fuel injection. Cold starts and throttle response stay consistent across altitude and temperature, the main practical edge over a carbureted equivalent.

Valve clearance checks

Valve clearances on DOHC-equipped engines like the RM-Z450's drift slowly with mileage rather than failing suddenly - sticking to the service interval keeps it a non-issue.

Brake disc and pad wear

Single disc up front provides the primary stopping power; inspect disc thickness and pad wear at each tyre change to catch scoring before it becomes a rotor replacement.

Suspension condition on used examples

Suspension duties are handled by Telescopic, cartridge-type fully adjustable rebound, compression and pre-load settings up front and Link-type, spring preload fullyadjustable rebound, compression and pre-load settings at the rear. Weeping fork seals aren't a dealbreaker on a used bike, but they're a fair basis for negotiating price.

Final drive maintenance

Chain final drive on the RM-Z450 means routine lubing and tension checks are part of ownership - skip them and sprocket wear accelerates noticeably.

Low-speed handling

The RM-Z450's 101.5 kg kerb weight makes low-speed control noticeably less effort than on a heavier machine.

RM-Z450 - Buying & Maintenance Guide

What to check before buying

A pre-purchase check on the 2008 Suzuki RM-Z450 should cover the same ground every time: service history, chain and sprocket condition, and any oil seepage around the casings. Start it from cold if you can - a well-kept RM-Z450 settles to a smooth idle within seconds.

Oil and filter changes

Oil changes are the cheapest insurance you can buy for a RM-Z450's engine - keep to the manufacturer's interval rather than stretching it. Use the viscosity grade the manual specifies, not whatever's on sale.

Fuel system care

Injector systems like the RM-Z450's hold up well with basic care - decent fuel, an occasional cleaner additive, and draining old fuel before any layup longer than three months.

Valve clearance service

There's no reliable seat-of-the-pants way to tell if a RM-Z450's valve clearances are in spec - a light top-end tick is the only real warning sign, and by then some wear has already happened. Service records are the only proof.

2008 Suzuki RM-Z450 - Frequently Asked Questions

What engine does the 2008 Suzuki RM-Z450 have?

The 2008 Suzuki RM-Z450 uses a Single cylinder engine with 449 cc of displacement.

How much does the 2008 Suzuki RM-Z450 weigh?

The 2008 Suzuki RM-Z450 weighs 101.5 kg. This is the manufacturer's dry figure.

What is the fuel tank capacity of the 2008 Suzuki RM-Z450?

The 2008 Suzuki RM-Z450 has a 6.20-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 103-124 km between stops.

Is the 2008 Suzuki RM-Z450 suitable for shorter riders?

The 2008 Suzuki RM-Z450 has a seat height of 955 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 2008 Suzuki RM-Z450 have?

The 2008 Suzuki RM-Z450 uses Single disc at the front and Single disc at the rear.

What tyre sizes does the 2008 Suzuki RM-Z450 use?

The 2008 Suzuki RM-Z450 runs 90/90-21 front and 120/90-19 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What fuel system does the 2008 Suzuki RM-Z450 use?

The 2008 Suzuki RM-Z450 uses Injection. Electronic Fuel Injection, providing precise fuelling across the rev range and reliable cold-start behaviour.

Suzuki RM-Z450 Spec Evolution

The Suzuki RM-Z450 was produced across 18 model years (2005-2023). 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	2005	2006	2007	2008	2009	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023
Wet Weight	-	-	-	-	112.0 kg / 246.9 lbs	113.0 kg / 249.1 lbs	113.0 kg / 249.1 lbs	113.0 kg / 249.1 lbs	113.0 kg / 249.1 lbs	113.0 kg / 249.1 lbs	112.0 kg / 246.9 lbs	112.0 kg / 246.9 lbs	112.0 kg / 246.9 lbs	112.0 kg / 246.9 lbs	112.0 kg / 246.9 lbs	112.0 kg / 246.9 lbs	112.0 kg / 246.9 lbs	112.0 kg / 246.9 lbs
Dry Weight	101 kg / 222.7 lbs	100 kg / 220.5 lbs	100 kg / 220.5 lbs	101.5 kg / 223.8 lbs	-	-	-	106 kg / 233.7 lbs	-	-	-	-	-	-	-	-	-	-
Engine Type	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke	Single cylinder, four-stroke
Seat Height	995 mm / 39.2 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	955 mm / 37.6 in.	960 mm / 37.8 in.	960 mm / 37.8 in.	960 mm / 37.8 in.	960 mm / 37.8 in.	960 mm / 37.8 in.	960 mm / 37.8 in.
Fuel Capacity	7.00 litres / 1.85 gallons	7.00 litres / 1.85 gallons	7.00 litres / 1.85 gallons	6.20 litres / 1.64 gallons	6.20 litres / 1.64 gallons	6.20 litres / 1.64 gallons	6.20 litres / 1.64 gallons	6.20 litres / 1.64 gallons	6.20 litres / 1.64 gallons	6.20 litres / 1.64 gallons	6.20 litres / 1.64 gallons	6.20 litres / 1.64 gallons	6.30 litres / 1.66 gallons	6.30 litres / 1.66 US gallons	6.30 litres / 1.66 US gallons	6.30 litres / 1.66 US gallons	6.30 litres / 1.66 US gallons	6.30 litres / 1.66 US gallons
Bore x Stroke (in,)	3.8 x 2.5 inches	3.8 x 2.5 inches	3.8 x 2.5 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	1.8 x 2.2 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches	3.8 x 2.4 inches
Bore x Stroke (mm)	95.5 x 62.8 mm	95.5 x 62.8 mm	95.5 x 62.8 mm	96.0 x 62.1 mm	96.0 x 62.1 mm	45.5 x 55.2 mm	96.0 x 62.1 mm	96.0 x 62.1 mm	96.0 x 62.1 mm	96.0 x 62.1 mm	96.0 x 62.1 mm	96.0 x 62.1 mm	96.0 x 62.1 mm	96.0 x 62.1 mm	96.0 x 62.1 mm	96.0 x 62.1 mm	96.0 x 62.1 mm	96.0 x 62.1 mm
Comments	-	-	-	-	-	A special edition with black paint is available.	A black/green limited edition version is available.	Sold in the Philippines.	-	-	-	-	-	-	Traction management system	Traction management system	Traction management system	Traction management system

Key Specifications

Engine

Single cylinder

Power

Not published by manufacturer

Torque

Not published by manufacturer

Top Speed

Not published by manufacturer

Weight

101.5 kg / 223.8 lbs

Fuel Capacity

6.20 litres / 1.64 gallons

Full 2008 Suzuki RM-Z450 Specifications

Colours Yellow

Ground Clearance (in.) 13.8 inches

Ground Clearance (mm) 350 mm

Seat Height 955 mm / 37.6 in.

Wheelbase 1,480 mm / 58.3 in.

Height 1,260 mm / 49.6 in.

Length 2,185 mm / 86.0 in.

Width 830 mm / 32.7 in.

Dry Weight 101.5 kg / 223.8 lbs

Fuel Capacity 6.20 litres / 1.64 gallons

Bore x Stroke (in,) 3.8 x 2.4 inches

Bore x Stroke (mm) 96.0 x 62.1 mm

Displacement (cc) 449.00 cc

Displacement (ci) 27.40 cubic inches

Engine Type Single cylinder

Fuel Control DOHC

Stroke 4

Fuel System Injection. Electronic Fuel Injection

Compression Ratio 12.2:1

Engine Lubrication Semi-dry sump

Ignition Digital CDI

Final Drive Chain

Gearbox 5-speed

Suspension - Front Telescopic, cartridge-type fully adjustable rebound, compression and pre-load settings

Suspension - Rear Link-type, spring preload fullyadjustable rebound, compression and pre-load settings

Brakes - Front Single disc

Brakes - Rear Single disc

Tyres - Front 90/90-21

Tyres - Rear 120/90-19

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.