2021 Suzuki RM-Z450

2021 Suzuki RM-Z450

The 2021 RM-Z450 remains the champion’s choice, as its sleek, race-ready appearance, strong engine, and nimble chassis continue the Suzuki tradition of extraordinarily precise handling.

The RM-Z450 epitomizes Suzuki’s Winning Balance philosophy with strong brakes for controlled stopping power, a wide spread of engine muscle with high peak power, and a strong, light, and more nimble chassis that remains the class standard for cornering performance.

Tuning the electronic fuel injection and ignition systems for maximum performance is easy thanks to Suzuki’s smartphone-based MX-Tuner 2.0 or proven fuel-coupler system that is included with each 2021 RM-Z450.

• Great throttle response delivers high peak power.

• Evolved traction management system helps the bike hook up.

• Suzuki Holeshot Assist Control (S-HAC) gets you out front.

• ENGINE

The 449cc, liquid-cooled, four-stroke, four-valve, DOHC engine is the latest incarnation of Suzuki’s proven and reliable fuel-injected powerplant.

The engine has high peak horsepower with strong torque at lower engine speeds for excellent throttle response through the entire rev range.

The cylinder head intake port shape creates a high amount of tumble flow to the incoming fuel/air to increase power output.

• TRANSMISSION AND DRIVE

The well-sorted, five-speed transmission enables precise gear shift operation. This precise transmission feel is the result of an accurately machined shift cam for exact gear selection. Specialized machining processes also increase the precision of the matching gears.

The multi-plate, wet-clutch uses rack-and-pinion clutch release mechanism for precise feel of the engagement and disengagement points while riding.

The lightweight chain guide is shaped to accurately route the drive chain smoothly.

• CHASSIS

The RM-Z450’s twin-spar frame and twin-beam swingarm design continues Suzuki’s tradition of delivering the best-handling motocross machines available.

This aluminum alloy, twin-spar frame combines cast and extruded sections to achieve superior front-and-rear weight distribution while balancing strength and weight.

The frame is 700 grams (1.32 pounds) lighter than the prior generation RM-Z450 to improve cornering performance and shock absorption while delivering stable handling.

The swingarm is assembled with thin, yet strong, materials for improved cornering performance and stable handling.

The short wheelbase and frame head pipe location produces quick and nimble handling characteristics.

Hexagonal aluminum rails are used on the sub-frame for light weight, a slimmer appearance, and easier air filter service.

The sub-frame rails route inward to slim the bodywork, but also route upwards to provide additional space for the large air cleaner and the advanced BFRC shock absorber.