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Nothing Corners Like A Suzuki

Motocross is a relentless game, and the technology and training needed for bike and rider to excel are too. Suzuki poured more than 40 years of open-class racebike engineering into the latest generation RM-Z450. 

The RM-Z450 already has a heritage of 29 world and national championships to build on, including five AMA 450 Motocross, two AMA 450 Supercross,  three Australian Supercross   and three Australian Motocross Championships.  With this winning history comes a well-balanced engine, chassis and electronics package, plus dramatic styling. The result? The most potent, best-balanced and competitive RM-Z450 produced yet.

Open-Class Powerhouse

  • Power Everywhere

    The latest generation RM-Z450 engine has more low-end torque, a flatter overall torque curve, faster and yet more controllable throttle response, and more peak power than the previous version.

  • Refined Cylinder Head

    Cylinder head port shape was optimsied and the strength of the tumble flow increased by 25%. Improvements to reduce surface roughness within the ports make them smoother, and this contributes to greater engine output.

  • Mikuni Throttle Body With Undermount Injector

    The fuel-injector spray path aims fuel upward to hit the throttle butterfly valve directly for improved atomisation.

  • Optimised Intake Camshaft

    Features increased lift, improving intake efficiency and increasing power output at all engine speeds.

49mm SHOWA Spring Fork & BFRC Shock

The RM-Z450 is equipped with the latest SHOWA front and rear suspension components, delivering improved responsiveness and traction, enhanced ability to absorb impacts, better chassis stability, overall feedback to the rider, terrain feel and improved comfort.

Up front, an updated 49mm Showa coil-spring fork based on works A-type design replaces the previous air fork design.  Performance has been increased significantly and offers a more consistent feeling throughout a moto. Bike set-up and daily maintenance is also much easier for a wider range of riders. 

The Balance Free Rear Cushion (BFRC) rear shock design shares technology with Suzuki’s flagship GSX-R1000R sportsbike. The design balances pressure above and below the piston to better control the stroke and smooth out reactions to bumps and chop, even under severe braking.

Suzuki Holeshot Assist Control (S-HAC)

All the power in the world  won’t do any good if you can’t transfer it to the ground, and Suzuki’s innovative electronics work transparently with the rider for maximum acceleration on any type of dirt or track conditions.  Suzuki’s  third-generation traction management system, with a significantly updated S-HAC (Suzuki Holeshot Assist Control) system and more powerful ECM (engine control module).

The RM-Z450’s S-HAC system monitors throttle position and gear position in order to adjust ignition timing for maximum acceleration through the three critical stages of a motocross start: releasing the clutch, getting drive over the starting gate, and then powering  down the start straight.

Three settings are available:
A-mode: Intended for hardpack surfaces where controlling wheelspin is paramount
B-mode: For normal dirt conditions with good traction
OFF: For normal unassisted take-offs. 

  • Ergonomics

    Renthal Fatbar Handlebars

    Fitted as standard equipment , the top-shelf Renthal aluminium Fatbar offers more strength and less vibration than standard size aluminium handlebars.

  • Front Brake

    270mm Solid Wave Rotor

    The front brake disc diameter has been increased from 250mm on the previous generation to 270mm and the brake pad material has been optimised for more linear response characteristics as you brake harder.

  • Eelectronics

    Rich & Lean Couplers

    Riders can adjust the engine performance to suit varied track conditions, by plugging in either of two additional fuel-setting couplers to make the most of any riding conditions. Riders can also overwrite these plugs with new maps using the MX Tuner 2.0.

  • Fuel Tank

    6.3L Tank Capacity

    Material changed from aluminium to resin, saving 312g.


  • Displacement

  • Engine

    Single cylinder, liquid-cooled, DOHC
  • Transmission

    5-speed, constant mesh
  • Starter

    Primary Kick
  • Front Suspension

    49mm SHOWA inverted spring fork, adjustable compression and rebound damping and spring preload
  • Rear Suspension

    Link type, SHOWA Balance Free Rear Cushion Lite shock with adjustable compression and rebound damping and spring preload
  • Front Brakes

    Nissin twin-piston caliper, 270mm wave disc
  • Rear Brakes

    Nissin single-piston caliper, 240mm wave disc
  • Length

  • Width

  • Height

  • Wheelbase

  • Seat Height

  • Fuel Capacity

  • Wet Weight

  • Warranty

  • Model Code

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Calculations are based on a consumer loan with an annual comparison rate of 10.71%p.a. and a loan term of 5 years. The information provided by the finance calculator is indicative only and is not a formal or binding quote. It is of a general nature which is based on the accuracy of information you have provided and does not take into account your personal needs and financial circumstances. Nothing on this website constitutes or should be considered to constitute legal, taxation or financial advice. Before making a decision about any of the products and services featured on this website, you should consult with your own independent legal, taxation and financial advisors, who can advise you about your personal circumstances. Terms, conditions, fees and charges apply. Finance is available to approved applicants of Allied Retail Finance Pty Ltd t/a Suzuki Finance ABN 31 609 859 985 Australian Credit Licence No. 483211.