Motocross Bikes

2011Suzuki RM-Z450

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The 2011 Suzuki RM-Z450 is a competition-focused motocross machine built for serious amateur and professional riders. Powered by a liquid-cooled 449cc four-stroke engine with fuel injection, it delivers strong mid-range power and reliable performance on the track. Known for its lightweight aluminum frame and responsive handling, the RM-Z450 excels in high-speed cornering and acceleration.

Capacity: 449.0 ccm
Engine: Single, four-stroke
Gearbox: 5-speed
Dry weight: 101.5 kg
Seat height: 955 mm
Power: 56.0 HP (41.2 kW)

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What’s new for the 2011 Suzuki RM-Z450

vs the 2010

Spec	2010	2011
Wet weight	123.5 kg (272.3 pounds)	113.0 kg (249.1 pounds)
Front suspension	SHOWA 47mm Telescopic, pneumatic / coil spring, oil damped	Telescopic inverted, coil spring, oil damped
Rear suspension	Swingarm link type, SHOWA piggyback-reservoir shock	Swingarm, link type, coil spring, oil damped
Compression	12.2:1	12.4:1

Other years 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail96%

Cornering88%

City riding5%

Daily riding10%

Touring5%

Two-up0%

Track85%

Best for: Built purely for motocross track and off-road competition, not for street or commuting use.
Built for: A raw, high-revving, single-cylinder motocross machine that rewards aggressive riding with sharp handling and explosive acceleration out of corners.
Not ideal for: Not suitable for beginners, passengers, daily road commuting, or anyone seeking comfort or long-distance touring capability.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 955mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2011 Suzuki RM-Z450, with a cramped knee angle of around 85 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 449.0 ccm
Power: 56.0 HP (41.2 kW)
Engine type: Single, four-stroke
Power/weight ratio: 0.5517 HP/kg (dry)
Bore x stroke: 96.0 x 62.1 mm
Compression: 12.4:1
Cooling system: Liquid
Fuel system: Injection
Starting: Kick
Ignition: Electronic
Valves per cylinder: 4

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet, multi-plate rack-and-pinion clutch

Dimensions & weight

Wheelbase: 1495 mm
Overall length: 2190 mm
Overall width: 830 mm
Overall height: 1270 mm
Seat height: 955 mm
Dry weight: 101.5 kg
Wet weight: 113.0 kg
Fuel capacity: 6.20 litres
Ground clearance: 325 mm

Chassis & suspension

Frame: Twin-spar aluminum frame and swingarm.
Front suspension: Telescopic inverted, coil spring, oil damped
Rear suspension: Swingarm, link type, coil spring, oil damped
Front wheel travel: 310 mm
Rear wheel travel: 310 mm
Rake (fork angle): 29.8°
Trail: 130 mm

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 270 mm
Rear brakes: Single disc
Front tyre: 80/100-21
Rear tyre: 110/90-19

Other

Color options: Yellow

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	2005	2011	2016	2022	2027
Capacity	449 cc	449 cc	449 cc	449 cc	449 cc
Dry weight	101 kg	102 kg	102 kg	102 kg	102 kg
Seat height	995 mm	955 mm	955 mm	960 mm	960 mm
Fuel capacity	7 L	6.2 L	6.2 L	6.3 L	6.3 L