2019 Suzuki RM-Z450

Minor suspension changes follow extensive updates in 2018

2019 Suzuki RM-Z450
2019 Suzuki RM-Z450Suzuki

The Suzuki RM-Z450 is the Japanese brand’s flagship motocross bike. This past year, it benefited from a significant number of updates, so for 2019 it receives only minor changes: a lighter-rate shock spring, different damping settings for the fork and shock, and new graphics. The RM-Z450 was the first 450cc motocross bike to benefit from electronic fuel injection back in 2008. A decade later, the RM-Z450 was also the first production motocross bike to come with a Showa Balance Free Rear Cushion (BFRC) shock, a high-spec component to which only factory-level supercross and motocross racers previously had access.

As of 2019, the RM-Z450 is the only 450cc motocross bike that does not come equipped from the factory with “the button”—an electric starter. Thankfully, the otherwise fully modern engine kicks to life fairly easily. It produced 50 hp at 8,380 rpm and 33 pound-feet of torque at 7,350 rpm on the Cycle World Dynojet dynamometer. With those figures, the RM-Z450 ranks fifth in horsepower output and second in the torque category among the big six 450cc motocrossers; in alphabetical order: Honda, Husqvarna, Kawasaki, KTM, Suzuki, and Yamaha.

Likes: Corners well and has comfortable ergonomics

Dislikes: Old-school four-stroke engine character and no electric start

Verdict: An easy-to-ride 450cc motocross bike

2019 Suzuki RM-Z450 Reviews And Comparisons

After Suzuki significantly updated the RM-Z450 in 2018, the bike was praised by test riders for its much-plusher and hassle-free fork, a slightly more powerful engine, and living up to its reputation as being one of the best cornering machines in the category.

2019 Suzuki RM-Z450 Competition

The 450cc motocross-bike market is one of the most competitive in the world of motorcycling with six manufacturers constantly improving their bikes. If you are interested in the Suzuki RM-Z450, you should also consider these motorcycles with similar pricing, specifications, and intended use:

2019 Suzuki RM-Z450 Specifications And Pricing

The 2019 Suzuki RM-Z450 retails for $8,949, which makes it the most affordable—or least expensive, depending on how you roll—of the top six 450cc motocross bikes on the market. The RM-Z, however, weighs 250 pounds, which ties it with the Honda CRF450R as the heaviest bike in the class.

Manufacturer Claimed Specifications

Price $8,949
Engine Liquid-cooled, DOHC single-cylinder
Displacement 449.9cc
Bore x Stroke 95.0mm x 63.4mm
Horsepower N/A
Torque N/A
Transmission 5-speed
Final Drive Chain
Seat Height 37.8 in.
Rake 27.8º
Trail 4.7 in.
Front Suspension 49mm fully adjustable; 12.0-in. travel
Rear Suspension Fully adjustable; 12.3-in. travel
Front Tire 80/100-21
Rear Tire 110/90-19
Fuel Capacity 1.7 gal.
Wheelbase 58.3 in.
Claimed Dry Weight N/A

Cycle World Tested Specifications

Seat Height N/A
Wet Weight 250 lb.
Rear-Wheel Horsepower 50.1 hp @ 8,380 rpm
Rear-Wheel Torque 33.1 lb.-ft. @ 7,350 rpm
0–60 mph N/A
1/4-mile N/A
Braking 30–0 mph N/A
Braking 60–0 mph N/A
2019 Suzuki RM-Z450
2019 Suzuki RM-Z450 Right SideSuzuki