web counter

Suzuki 2021 RM-Z450 Off-Road Bike Review Specs

This year’s Suzuki 2021 RM-Z450 Off-Road Bike is still the champion’s pick, thanks to its sleek, race-ready design, powerful engine, and agile chassis. Regarding handling and cornering performance, the RM-Z450 sets the bar higher than any other motorcycle in its class, thanks to its lighter weight and more agile chassis. The RM-Z450 also has solid brakes for controlled stopping power and wide distribution of engine muscle with high peak power. Adding ergonomics, style, and reliability to the mix, you’ve got a machine ready to race.

Suzuki’s mobile device-based MX-Tuner 2.0 and proven fuel-coupler system, which is included with each 2021 RM-Z450, make it simple to fine-tune the electronic fuel injection and ignition systems for optimal performance. With a smartphone or tablet, you can tune your motorcycle to suit the track conditions or how you prefer to ride.

Suzuki 2021 RM-Z450 Off-Road Bike

Suzuki 2021 RM-Z450 Off-Road Bike – Features and Price

Engine Features

An updated version of Suzuki’s fuel-injected engine is the 449cc, four-stroke DOHC four-valve liquid-cooled four-valve DOHC engine. For excellent throttle response across the entire rev range, the engine has high peak horsepower and strong torque at low engine speeds. Flowing through the cylinder head’s intake port is a high amount of tumble flow, which increases the amount of power delivery generated by the engine. As a result of the air cleaner’s large and straight opening to the throttle body, performance is improved. Power delivery is smooth, and fuel efficiency is high, thanks to Suzuki’s advanced injection system. Reliability is also a strong suit of this system. Because the fuel injector on the RM-throttle Z450’s body is located near the butterfly valve and supplied by a high-pressure fuel pump, the fuel charge atomization is improved. Because of the lack of a complicated control linkage in this throttle body design, the rider has a better sense of connection to the engine. Power is increased across the rev range thanks to a more aggressive intake camshaft profile.

Suzuki Composite Electrochemical Material (SCEM) coating provides durability, lightweight, and efficient heat transfer to the small aluminum cylinder. The piston’s casting incorporates ribs around the wrist pin bosses to match the engine’s high horsepower to the component dependability. With a long kick-start lever, well-matched gear ratios, a vast air cleaner, and breather system, and an automated decompression system that works precisely and effectively, engine starting is straightforward and efficient. By AMA sound rules, the high-flow exhaust system has been designed. The stator cover (on the left) and the coolant pump (on the right) are protected against dirt and stones by tough resin engine covers.

Advanced Electronics

Fuel injection and ignition system settings may be readily adjusted for optional racing performance with the inclusion of Suzuki’s MX-Tuner 2.0.EFI tuning is made more accessible by Suzuki’s reliable, easy-to-use fuel couplers. Track management has been upgraded and improved in the new RM-Z450 model. ECM continuously analyses throttle opening, engine speed, and gear position and then changes ignition timing and injector duration to fine-tune the engine output for optimum traction in riding circumstances. In the ECM in the RM-traction Z450’s management system, the rear tire spin is not measured, unlike a street bike’s traction control system. Motocrossers’ requirements vary from those of street bikes. Hence this technology allows for continual traction modification at all times.

Suzuki 2021 RM-Z450 Off-Road Bike

Developed from the factory racing bike, Suzuki’s Holeshot Assist Control (S-HAC) may assist riders in their departure from the starting gate for an early lead. The rider’s skill level and beginning circumstances are considered when selecting a launch mode. Mode A and B of the S-HAC system also include three steps. At the time of launch, passing the gate, and reaching maximum speed, this aids riders. The RM-S-HAC Z450’s settings for Mode A have been precisely calibrated to improve the rider’s throttle control during launches.

Transmission Features

Changing gears is a snap with the transmission’s well-organized five speeds. To provide this precise transmission feel, a shift cam has been machined to ensure accurate gear selection. The accuracy of the matching gears may also be improved via the use of specialized machining procedures.

Because the clutch release mechanism utilizes a rack and pinion system, the engagement and disengagement positions on a motorcycle may be felt precisely. The chain guide’s lightweight design is tailored to provide a smooth path for the drive chain.

Chassis Features

Retiring Suzuki’s legacy of producing the best-handling motocross motorcycles, Suzuki’s RM-Z450 has a dual spar frame and twin-beam swingarm. The cast and extruded components of this aluminum alloy twin-spar framework create a better front-to-rear weight distribution while maintaining a healthy weight/strength ratio. The RM-weight Z450 has been reduced by 700 grams (1.32 pounds) to increase cornering performance and shock absorption while maintaining a stable ride.

To increase turning and handling stability, the swingarm is constructed from lightweight yet very sturdy components. The short wheelbase and position of the frame head pipe result in agile handling. The sub-frame has lightweight hexagonal aluminum rails for a more streamlined look and straightforward access to the air filter.

Suzuki 2021 RM-Z450 Off-Road Bike

Rails in the sub-frame go inward for a slimmer appearance, but they also go higher to provide room for a massive air cleaner and a cutting-edge BFRC shock absorber. To allow the RM-Z450 rider to move about the cockpit quickly during enthusiastic driving, the RM-bodywork Z450 has been slimmed down. The Showa BFRC shock absorber on the RM-Z450 was modeled after the suspension of the GSX-R1000R Superbike. Improved traction and improved absorption over bumps are achieved by the employment of a separate, external dampening circuit in the BFRC. Comfort and stability are enhanced at lower speeds thanks to BFRC’s completely adjustable damping control. Front fork Showa features big inner tubes for strength and rod pipes for endurance. Large, adjustable dampening cylinders in each fork leg work in conjunction with the bike’s springs to provide the rider with excellent responsiveness to the terrain and a strong sense of control. The ease and balance with which the front suspension can be tuned and maintained make it ideal for regular riders. With a straighter bend than previous versions, the robust Renthal aluminum tapered handlebar aids the rider during complex maneuvers.

The new Showa coil spring front suspension and handlebars necessitated the lightweight upper fork bracket. An oversized 270mm wave-style front brake rotor with a two-piston caliper is employed for efficient stopping performance and sensation. To avoid dirt contamination and the risk of the rider’s boot contacting it while riding, the rear brake master cylinder is fitted with a small design. Bridgestone Battlecross X30 tires are installed to the RM-Z450 to assist its powerful engine, braking, and handling capabilities. Cross-section rims of black anodized aluminum reduce unsprung weight while maintaining structural integrity.

Front fenders and radiator shrouds integrate into side covers and an upswept tail to provide a sense of speed while saving weight and making servicing easier. A range of riding postures is made possible by the motorcycle’s slim frame and utilitarian appearance. The new plastic gasoline tank is half a pound lighter than the aluminum tank of the previous version. A generous 1.7 US gallons of fuel may be stored within. Because the air cleaner receives a lot of moisture and debris, the seat base was designed to help keep the air cleaner dry and clean. Trash is less likely to contaminate the air filter element when this is in place.

The seat is well-shaped and narrow, thanks to high-density foam, to help the rider maintain control of the motorbike. The seat’s cover has a large blue gripper panel that runs from nose to tail. The 2021 graphics kit adds unique stripes and Suzuki insignia to the Champion Yellow bodywork.

Suzuki 2021 RM-Z450 Off-Road Bike – Price

The new Suzuki 2021 RM-Z450 Off-Road Bike is available at $8,999 only.

Suzuki 2021 RM-Z450 Off-Road Bike – Technical Specifications


Engine 449cc, 4-stroke, liquid-cooled, single-cylinder, DOHC
Bore x Stroke 96mm x 62.1mm (3.78 inches x 2.4 inches)
Compression Ratio 12.5:1
Fuel System Fuel injection, 44mm throttle body
Starter Primary Kickstarter with automatic decompressor
Lubrication Semi-dry sump

Drive Train

Clutch Wet multi-plate
Transmission All-new 5-speed constant mesh
Final Drive Chain and DID 520DMA2K, 114 links

Suzuki 2021 RM-Z450 Off-Road Bike


Suspension Front Inverted telescopic, oil damped, coil spring, adjustable damping force
Suspension Rear BFRC-link type, oil damped, coil spring, adjustable spring preload, and 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 110/90-19 M/C (62M), tube type
Fuel Tank Capacity 6.3 L (1.7 US gal.)
Color Champion Yellow No. 2


Ignition Electronic ignition (CDI)
Spark Plug NGK DIMR8C10


Overall Length 2175 mm (85.6 in.)
Overall Width 835 mm (32.9 in.)
Overall Height 1260 mm (49.6 in.)
Wheelbase 1480 mm (58.3 in.)
Ground Clearance 330 mm (13.0 in.)
Seat Height 960 mm (37.8 in.)
Curb Weight 112 kg (247 lb.)


Warranty Not applicable

Related Articles

Stay Connected