2011 Suzuki RM-Z450 | Preview

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RM-Z450 Preview

While designing the 2011 RM-Z450, Suzuki didn’t have to look any further than the 2009 AMA Supercross Championship season. The RM-Z450 dominated the series, and Suzuki fine-tuned that same technology for an even better dirt bike for 2011.

Some of these refinements include meeting a stricter AMA noise limit (94b) while keeping the engine output smooth, increasing the compression ratio from 12.2:1 up to 12.5:1 for higher output, and changed the intake/exhaust timing for a better feeling.

Due to the numerous wins their motocross bikes have, this formula has proven to be successful for Suzuki. And their goal for 2011 was to make their championship-winning machine even more potent right out of the crate.

2011 Motocross 450cc:

  • For 2011, the RM-Z450 meets stricter AMA noise limit (94db) while keeping smooth engine output.
  • Suzuki’s class-leading fuel-injection system uses technology from Suzuki’s championship-winning models-the GSX-R motorcycles and the QuadRacer R450 ATV.
  • The RM-Z450, the first motocross bike to ever use fuel injection, has won both outdoor championships as well as a Supercross championship.

Chassis Features:

  • The RM-Z450’s slim chassis design makes for a comfortable riding position, opening up the cockpit to help allow the rider to actively take control of the machine.
  • Class-leading 47mm Showa inverted forks provide optimum wheel travel and are compression- and rebound-damping adjustable.
  • A Showa piggyback-reservoir rear shock with high/low-speed compression damping adjustment and rebound damping and spring preload adjustments. The rear shock, working through Suzuki’s superlative rising-rate linkage system, provides 310mm of wheel travel, delivering maximum traction.
  • The RM-Z450’s twin-spar aluminum frame and swingarm was developed and refined for a highly optimized balance between rigidity and superb high-speed traction. The lightweight swingarm helps enhance terrain-traversing performance over bumps.
  • Race-inspired disc rotors offer enhanced cooling performance and efficient mud slinging.
  • A stylish two-tone radiator shrouds accentuate the RM-Z450’s agile looks.
  • The RM-Z450 comes with a gripper seat, with projected cross-shaped patterns on the top surface to provide additional grip.

Engine Features:

  • The RM-Z450’s 449cc four-stroke, liquid-cooled, DOHC, four-valve, fuel-injected engine was developed and refined to deliver phenomenal idle-to-redline thrust.
  • The lightweight, battery-less, motocross-use electronic fuel injection system uses progressive throttle linkage for efficient power delivery.
  • A 12-hole fuel injector delivers a fine fuel/air mist for efficient operation.
  • The RM-Z450’s aluminum cylinder is treated with Suzuki Composite Electrochemical Material (SCEM) coating, and was built for durability, light weight and efficient heat transfer.

Transmission Features:

  • A 5-speed transmission provides extra flexibility, offering gear ratios suited for various terrains and conditions.
  • The RM-Z450 has a link-type shifting system, which offers smooth transitions through the gears.

2011 RM-Z450 Motorcycle Specifications:


  • Overall Length 2190 mm (86.2 in)
  • Overall Width 830 mm (32.7 in)
  • Wheelbase 1495 mm (58.9 in)
  • Ground Clearance 325 mm (12.8 in)
  • Seat Height 955 mm (37.6 in)
  • Curb Weight 113 kg (249 lbs)
  • Transmission 5-speed constant mesh
  • Final Drive Chain, DID520MXV4, 114 links
  • Suspension Front Telescopic inverted, coil spring, oil damped
  • Suspension Rear Swingarm, link type, coil spring, oil damped
  • Brakes Front Disc brake
  • Brakes Rear Disc brake
  • Tires Front 80/100-21 51M, tube type
  • Tires Rear 110/90-19 62M, tube type
  • Fuel Tank Capacity 6.2 L (1.6 US gallons)


  • Displacement 449cc, 4-stroke, liquid-cooled, single cylinder, DOHC
  • Fuel System Suzuki fuel injection
  • Starter Primary kick
  • Ignition Electronic ignition (CDI)


  • Warranty No Warranty