Cycle Smart NJ
1205 NJ-73, Mt Laurel Township, NJ 08054
2018 RMX450Z

2018 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 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

Additional Features

Six-month limited-warranty. Longer coverage periods with other benefits are available through Suzuki Extended Protection (SEP).

A variety of Genuine Suzuki Accessories for RMX450Z owners are available including a large selection of Suzuki logo apparel.


Engine 449cc, 4-stroke, liquid-cooled, single cylinder, DOHC
Bore x 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
Transmission 5-speed constant mesh
Clutch Wet multi-plate
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 gallons)
Ignition Electronic Ignition (CDI)
Spark Plugs 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 lbs.)
Warranty 6-month limited warranty (extension and other benefits available through Suzuki Extended Protection)
Extension Longer coverage periods with other benefits available through Suzuki Extended Protection (SEP)
Championship Yellow with black/blue accents