2018 Suzuki RMX450Z





Powerful, torquey fuel-injected 449cc engine. Slim, aggressively styled chassis and bodywork. Electric starter. Full-function, two-mode instrument cluster. Enduro lighting. Additional chassis protection. Sharing core technologies with Suzuki’s Championship-winning open-class RM-Z450, the RMX450Z rewrites the rules for serious trail riders.

Key Features
  • Fuel-injected engine is based on Suzuki's winning open-class motocrosser; the RM-Z450
  • The RMX450Z is EPA Emissions and California Green-sticker compliant
  • Trail-ready features include an electric starter powered by a compact battery (plus kick-start back-up), a coolant reservoir tank and an engine protector plate
  • Enduro ready, full-function instrument cluster includes a low fuel level warning light
  • The airbox features a hinged lid for quick air-filter maintenance
  • Aluminum-alloy twin-spar frame with high-performance SHOWA fork and piggyback-reservoir style rear shock
  • Competition-developed seat and slim bodywork creates a controllable, ergonomic riding position
  • New for 2018, the racing-inspired bodywork and graphics includes a sturdy steering stem that is anodized black, complementing the gold fork leg finish
  • Black anodized EXCEL aluminum rims are ready to withstand rugged off-road conditions
Engine Features
  • 449cc 4-stroke, 4-valve, liquid-cooled, fuel-injected DOHC powerplant is based on the high-performance and reliable RM-Z450
  • Minimal differences as compared to the RM-Z450 motocross engine includes a modified inlet tract and revised cam profiles to increase low and mid-rpm power
  • The compact aluminum cylinder is finished with Suzuki Composite Electrochemical Material (SCEM) coating for durability, light weight and efficient heat transfer
  • A larger magneto-generator is fitted to charge the battery and power the lights. The increased mass also aids traction
  • Advanced fuel-injection system makes for extra-smooth power delivery, high fuel efficiency, and superb reliability
  • The airbox features a hinged lid for quick air-filter maintenance and better protection from debris
  • The coolant reservoir tank has a specially located filler cap for easy access
Transmission Features
  • Strong 5-speed transmission with wide gear ratios and primary/final drive ratios selected to suit various situations from steep trails to open terrain
Chassis Features
  • The aluminum-alloy twin-spar frame combines cast and extruded sections to achieve low weight with high rigidity and durability
  • RM-Z450-derived trail-ready suspension uses high-performance SHOWA forks with full adjustability
  • Aluminum, link-style swingarm is descended from the RM-Z line and uses a fully adjustable SHOWA piggyback-reservoir style rear shock
  • Rear suspension linkage geometry combines the RM-Z series' renowned turning-on-rails abilities with optimized handling performance for trail rides
  • Race-inspired waved disc rotors are mounted to black EXCEL aluminum rims with stainless steel spokes
  • High-impact, black plastic fork leg, plus rear brake rotor and caliper protectors shield these components from trail obstacles
  • The standard Renthal Fatbar is stronger and reduces vibration better than conventional aluminum handlebars
  • Bright 35W headlight is smoothly incorporated into the front number plate
  • Trim, low-draw LED taillight is neatly tucked under the lip of the rear fender
  • The full-function, dual (sport/standard) mode instrument cluster is in a durable, ultra-compact housing. Sport mode simply shows timer, tripmeter, average speed and tire-diameter correction (to reduce information during spirited riding or competition). Standard mode also shows speed, time, two trip lengths and voltage. The instrument’s integrated tire diameter calculator allows precise fine tuning for different tires to ensure accuracy of the speed and distance displays.
  • Champion Yellow bodywork (including a yellow rear fender) with race team-inspired graphics package
  • Gripper seat, with projected cross-shaped patterns on its blue top surface, aids rider control
  • Engine: 449cc, 4-stroke, liquid-cooled, single cylinder, DOHC
  • Bore Stroke: 96.0 x 62.1 mm (3.78 x 2.40 in.)
  • Compression Ratio: 11.6: 1
  • Fuel System: Fuel Injection, 41mm throttle body
  • Starter: Electric with back-up kick starter
  • Lubrication: Semi-dry sump
Drive Train
  • Clutch: Wet multi-plate
  • Transmission: 5-speed constant mesh
  • Final Drive: Chain, DID 520MXV, 114 links
  • Suspension Front: Inverted telescopic, coil spring, oil damped, adjustable damping force
  • Suspension Rear: Link type, coil spring, oil damped, adjustable spring preload & damping force
  • Brakes Front: Disc brake, single rotor
  • Brakes Rear: Disc brake, single rotor
  • Tires Front: 80/100-21 M/C 51M, tube type
  • Tires Rear: 110/90-18 M/C 64M, tube type
  • Fuel Tank Capacity: 6.2 L (1.6 US gal.)
  • Color: Championship Yellow with black/blue accents
  • Ignition: Electronic Ignition (CDI)
  • Spark Plug: NGK CR8EIB-10
  • Headlight: 12V 35W
  • Tail light: LED
  • 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 Weight: 123.5 kg (272 lb.)
  • Warranty: 6 month unlimited mileage limited warranty
  • Extensions: Longer coverage periods with other benefits available through Suzuki Extended Protection (SEP)
For your safety, always wear a helmet, eye protection, and protective clothing when riding any motorcycle or ATV. Never ride under the influence of alcohol or other drugs. Study your owner's manual and always inspect your Suzuki before riding. Take a riding skills course. For the MSF street course nearest you, call 1-800-446-9227. Off-road riders can enroll in the DirtBike SchoolSM by calling 1-877-288-7093. ATV riders can call the SVIA at 1-800-852-5344 and we’ll even pay for the training. Suzuki engineered the GSX-Rs™, Hayabusa, and the QuadSport Z400 for experienced riders. Specifications, appearances, equipment, color, features, materials and other items of “SUZUKI” products shown are subject to change by manufacturer at any time without notice.



Engine Type
4-stroke, single cylinder, DOHC
Bore and Stroke
3.78 x 2.40 in. (96.0 x 62.1 mm)
Compression Ratio
11.6: 1
Fuel System
Fuel Injection, 41mm throttle body
Electronic Ignition (CDI)


Front Suspension
Inverted telescopic, coil spring, oil damped, adjustable damping force
Front Brakes
Disc brake, single rotor
Front Tire
80/100-21 M/C 51M, tube type
Rear Suspension
Link type, coil spring, oil damped, adjustable spring preload & damping force
Rear Brakes
Disc brake, single rotor
Rear Tire
110/90-18 M/C 64M, tube type


Dry Weight
Curb Weight: 272 lb. (123.5 kg)
Fuel Capacity
1.6 US gal. (6.2 L)
58.5 in. (1485 mm)
Ground Clearance
12.6 in. (320 mm)
Seat Height
37.4 in. (950 mm)


5-speed constant mesh
Final Drive
Chain, DID 520MXV, 114 links


Championship Yellow with black/blue accents
6 month unlimited mileage limited warranty


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