2015 Suzuki RM-Z450 Specifications

Name: 2015 Suzuki RM-Z450
Brand: Suzuki

Cross / motocross • Specs last verified 13 July 2026

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2015 Suzuki RM-Z450 Overview

The 2015 Suzuki RM-Z450 is a cross / motocross motorcycle. Under the tank sits a Single cylinder, four-stroke engine running Double Overhead Cams/Twin Cam (DOHC) valve actuation, a compression ratio of 12.5:1. The bore and stroke measures 96 x 62.1 mm. From a practical standpoint, the 2015 RM-Z450 tips the scales at 113 kg, carries a 6.20-litre fuel tank, offers a seat height of 955 mm and spans a 1,495 mm wheelbase. Scroll down for the complete 2015 Suzuki RM-Z450 spec sheet covering every technical detail from suspension travel to tyre sizes.

2015 Suzuki RM-Z450 compared with other bikes in the Cross / motocross category

Here is how the 2015 Suzuki RM-Z450 stacks up against other bikes in the Cross / motocross category in our database. Each model counts once, using the model year closest to this one, and the comparison covers up to 200 models.

Wet weight of 113 kg is heavier than that of 95 of the other 128 bikes in the Cross / motocross category.
Only 59 of the other 199 bikes in the Cross / motocross category have a taller seat height than the 955 mm of the RM-Z450.
Narrowing the field to the 72 models within five model years of it, the wet weight of 113 kg is heavier than that of 62 of the other 71.

Versus the 2014 model

The figures we track are unchanged from the 2014 model: wet weight and seat height all match.

2015 RM-Z450 - Pros & Cons

Strengths

Fuel injection: The fuel injection system delivers crisp throttle response and reliable cold starts regardless of altitude or temperature.
Strong front braking: The single disc front brake gives excellent stopping power and responds well to aftermarket braided lines.

Considerations

Tall seat height: The 955 mm seat height will challenge shorter riders - tiptoeing at low speeds is something to factor into your decision.
Modest fuel capacity: The 6.20-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

Fuelling & injector care

Fuelling comes from fuel injection. Systems like this are largely maintenance-free beyond keeping fuel quality decent and injectors clear - a fuel-system cleaner every service interval is cheap insurance.

Valve clearance checks

Double Overhead Cams/Twin Cam (DOHC) valve actuation on the RM-Z450 means clearances should be checked at the manufacturer's specified interval - they can tighten as mileage accumulates, and a light top-end tick is usually the first sign.

Brake disc and pad wear

The single disc 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 RM-Z450 runs Inverted telescopic, coil spring, oil damped and Link type, coil spring, oil damped 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.

Low-speed handling

At just 113 kg, the RM-Z450 is light enough to manhandle easily at a standstill - one of the practical advantages of its class.

RM-Z450 - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2015 Suzuki RM-Z450 cross / motocross, start with the basics: check the service book for oil change frequency, inspect the drivetrain for wear, and look for oil seepage around the engine casings and rocker covers. This model runs chain final drive, so check chain slack and sprocket tooth profile specifically - a worn sprocket is a cheaper fix now than after it's chewed up the next chain. Now 11 years old, this cross / motocross is as likely to show age-related wear (perished rubber, seized fasteners, degraded seals) as mileage-related wear. A cold start test is invaluable - a well-maintained RM-Z450 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 for the RM-Z450's single cylinder, four-stroke engine. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. With a 12.5:1 compression ratio, running the octane grade specified in the manual matters more than on a lower-compression engine. Always use the correct viscosity grade as specified in the owner's manual.

Fuel system care

The RM-Z450'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 RM-Z450. A bike with clearances out of spec doesn't always feel obviously wrong - but tight clearances accelerate valve seat wear. Ask for service documentation proving it's been done.

2015 Suzuki RM-Z450 - Frequently Asked Questions

What engine does the 2015 Suzuki RM-Z450 have?

The 2015 Suzuki RM-Z450 is powered by a Single cylinder, four-stroke engine.

How much does the 2015 Suzuki RM-Z450 weigh?

The 2015 Suzuki RM-Z450 weighs 113 kg. This is the manufacturer's wet figure.

What is the fuel tank capacity of the 2015 Suzuki RM-Z450?

The 2015 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 2015 Suzuki RM-Z450 suitable for shorter riders?

The 2015 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 2015 Suzuki RM-Z450 have?

The 2015 Suzuki RM-Z450 uses single disc at the front and single disc at the rear.

What tyre sizes does the 2015 Suzuki RM-Z450 use?

The 2015 Suzuki RM-Z450 runs 80/100-21 front and 110/90-19 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What fuel system does the 2015 Suzuki RM-Z450 use?

The 2015 Suzuki RM-Z450 uses 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, four-stroke

Power

Not recorded

Torque

Not recorded

Top Speed

Not recorded

Weight

113.0 kg / 249.1 lbs

Fuel Capacity

6.20 litres / 1.64 gallons

Full 2015 Suzuki RM-Z450 Specifications

Colours Champion Yellow

Warranty 12 month unlimited mileage limited warranty.

Ground Clearance (in.) 12.8 inches

Ground Clearance (mm) 325 mm

Seat Height 955 mm / 37.6 in.

Wheelbase 1,495 mm / 58.9 in.

Height 1,270 mm / 50.0 in.

Length 2,190 mm / 86.2 in.

Width 830 mm / 32.7 in.

Fuel Capacity 6.20 litres / 1.64 gallons

Wet Weight 113.0 kg / 249.1 lbs

Bore x Stroke (in,) 3.8 x 2.4 inches

Bore x Stroke (mm) 96.0 x 62.1 mm

Engine Type Single cylinder, four-stroke

Fuel Control Double Overhead Cams/Twin Cam (DOHC)

Engine Detail Aluminum cylinder with Suzuki Composite Electrochemical Material (SCEM) coating

Fuel System Injection

Compression Ratio 12.5:1

Engine Lubrication Semi-dry sump

Ignition Electronic ignition

Starter Kick

Valve System 4

Final Drive Chain

Gearbox 5-speed

Primary Drive Chain, DID520MXV4, 114 links

Suspension - Front Inverted telescopic, coil spring, oil damped

Suspension - Rear Link type, coil spring, oil damped

Brakes - Front Single disc

Brakes - Rear Single disc

Tyres - Front 80/100-21

Tyres - Rear 110/90-19

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