The Suzuki RMX450Z was developed especially for off road use, thereby it features a rugged and powerful character.

The 2012 RMX450Z shares much of its DNA to Suzuki’s RM-Z450 and is powered by a 449cc 4-stroke , liquid-cooled DOHC engine which carries enough power to impress even the most demanding riders. The engine has also received a few tweaks including a customized inlet tract and adjusted cam profiles which have the role to increase low and mid-rpm power.

Finally, the 2012 RMX450Z also has a proven Keihin fuel injection system from the RM-Z bike and a five-speed constant mesh transmission that not only provides improved responsiveness, but has wider gear ratios, too.

Other features offered by the 2012 Suzuki RMX450Z include an electric starter, two-mode instrument cluster, a lightning kit , a back-up kick start, and a large magneto-generator.

Hit the jump for more information on the 2012 Suzuki RMX450Z.

  • 2012 Suzuki RMX450Z
  • Year:
  • Make:
  • Model:
  • Engine:
    4-stroke, 1-cylinder, liquid-cooled, DOHC
  • Transmission:
    5-speed constant mesh
  • Energy:
    Fuel Injection
  • Displacement:
    449 cc
  • Top Speed:
    110 mph
  • Price:

2012 Suzuki RMX450Z

2012 Suzuki RMX450Z High Resolution Exterior
- image 467974

Serious Performance Anywhere, Anytime

A powerful and torquey fuel-injected 449cm3 engine is the core feature of this off-road runner. Combine that with a slim and aggressively-styled chassis and bodywork and you have the makings of a bike that’s ready to tackle whatever road you decide to go to.

In addition to its style and mechanics, the RMX450Z also boasts of an electric starter, a fully-functioning, two-mode instrument cluster, and most impressive of all, shared core technologies with Suzuki’s Championship-winning open-class motocrosser.

Features and Benefits

2012 Suzuki RMX450Z Exterior
- image 467971
  • 449cm3 4-stroke, 4-valve, liquid-cooled, fuel-injected DOHC powerplant based on that of Suzuki’s winning open-class motocrosser RM-Z450.
  • Trail-ready features include an electric starter powered by a compact battery, a coolant reservoir tank and an engine protector plate.
  • A larger magneto-generator is fitted to charge the battery and power the lights.
  • Advanced fuel-injection system makes for extra-smooth power delivery, high fuel efficiency, superb reliability and reduced emissions.
  • The airbox features a hinged lid for quick air-filter maintenance and better protection from dust.
  • Minimal modifications from the motocrosser engine include modified inlet tract and revised cam profiles to increase low and mid-rpm power.
  • 5-speed transmission with wide gear ratios and primary/final drive ratios selected to suit various situations from steep trails to open terrain.
  • The aluminum-alloy twin-spar frame combines cast and extruded sections to achieve low weight with high rigidity and high durability.
  • RM-Z450-derived, trail-ready suspension, using high-performance Showa forks and Showa piggyback-reservoir style rear shock.
  • Rear suspension linkage geometry combines the RM series’ renowned turning-on-rails abilities with optimized handling performance for trail rides.
  • The aluminum-alloy swingarm, derived from RM-Z450, to maintain ideal balance, while the rear suspension linkage benefits from reduced free play.
  • Motocross-developed seat, slim bodywork and low-profile aluminum-alloy fuel tank together compose a comfortable, ergonomical riding position.
  • The full-function, two (sport/standard) mode instrument cluster in a durable, ultra-compact housing includes a low fuel level warning light.
  • Useful two-mode instrument display; Sport mode simply shows timer, tripmeter, average speed and tire-diameter correction.
  • Standard mode also shows speed, time, two trip lengths and voltage.
  • An integrated tire diameter calculator allows precise fine tuning for different tires to ensure accuracy of the speed and distance displays.


2012 Suzuki RMX450Z High Resolution Exterior
- image 467975
Engine Type 4-stroke, 1-cylinder, liquid-cooled, DOHC
Engine Displacement 449 cm3 (27.4 cu. in)
Bore x Stroke 96.0 mm x 62.1 mm
Compression Ratio 11.6 : 1
Transmission 5-speed constant mesh
Overall Length 2185 mm (86.0 in)
Overall Width 840 mm (33.1 in)
Overall Height 1265 mm (49.8 in)
Wheelbase 1485 mm (58.5 in)
Ground Clearance 320 mm (12.6 in)
Seat Height 950 mm (37.4 in)
Curb Mass 123.5 kg (272 lbs)
Suspension Front Telescopic, coil spring, oil damped
Suspension Rear Link type, coil spring, oil damped
Brakes Front Disc
Brakes Rear Disc
Tires Front 80/100-21 51M, tube type
Tires Rear 110/100-18 64M, tube type
Ignition Type Electronic ignition (CDI)
Fuel Tank Capacity 6.2 L (1.6 US gal)
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