14 August. Friday 2026
Suzuki RM-Z450 - 2021 Specifications and Reviews
The 2021 Suzuki RM-Z450 is a competitive 449cc four-stroke motocross bike engineered for intermediate to advanced riders seeking a balanced combination of power and handling. Its liquid-cooled, fuel-injected engine delivers reliable performance across various track conditions, while the aluminum frame and modern suspension geometry make it well-suited for both amateur racers and experienced weekend warriors.
General information | |
| Price as new | Do you know this bike?Click here to rate it. We miss 1 vote to show the rating. |
| Category | Cross / motocross |
| Year | 2021 |
| Model | Suzuki RM-Z450 |
Engine and Transmission Specifications | |
| Driveline | Chain, DID520MXV4, 114 links |
| Clutch | Wet, multi-plate rack-and-pinion clutch |
| Transmission type | Chain (final drive) |
| Gearbox | 5-speed |
| Cooling system | Liquid |
| Lubrication system | Semi-dry sump |
| Ignition | CDI |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Injection. 44mm throttle body |
| Valves per Cylinder | 4 |
| Bore x Stroke | 96.0 x 62.1 mm (3.8 x 2.4 inches) |
| Compression | 12.5:1 |
| Engine details | Aluminum cylinder with Suzuki Composite Electrochemical Material (SCEM) coating |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 449.0 ccm (27.40 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Wheels | Black anodized rims with a cross-section. Bridgestone X30 tires. |
| Rear brakes | Single disc |
| Diameter | 270 mm (10.6 inches) |
| Front brakes | Single disc |
| Rear tire | 110/90-19 |
| Front tire | 80/100-21 |
| Rear Suspension | BFRC-link type, coil spring, oil damped, adjustable spring preload and damping force |
| Front Suspension | Inverted telescopic, coil spring, oil damped, adjustable damping force |
| Frame type | Aluminum alloy, twin-spar |
Physical measures and capacities | |
| Fuel capacity | 6.30 litres (1.66 US gallons) |
| Wheelbase | 1480 mm (58.3 inches) |
| Ground clearance | 330 mm (13.0 inches) |
| Overall width | 835 mm (32.9 inches) |
| Overall length | 2175 mm (85.6 inches) |
| Overall height | 1260 mm (49.6 inches) |
| Seat height | 960 mm (37.8 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 112.0 kg (246.9 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Comments | Traction management system |
| Factory warranty | No warranty |
| Starter | Kick |
| Color options | Championship Yellow/Blue |
Performance Profile & Rider Fit
Best For
Track85%
City5%
Cornering88%
Daily Riding10%
Touring5%
Passenger0%
Rider Profile
| Best For | This bike suits experienced off-road and motocross riders comfortable with a tall seat height, aggressive power delivery, and no electric start. |
| Purpose | Built purely for motocross track and off-road competition, not for street or commuting use. |
| Rider Fit | Demands strong physical fitness, core strength, and good bike control due to its tall stance, firm suspension, and kick-start operation. |
| Character | A raw, high-revving, single-cylinder motocross machine that rewards aggressive riding with sharp handling and explosive acceleration out of corners. |
| Not Ideal For | Not suitable for beginners, passengers, daily road commuting, or anyone seeking comfort or long-distance touring capability. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1
MotorcycleDB Review
The 2021 Suzuki RM-Z450 is a powerful and reliable motocross bike that delivers impressive performance on the track. With its fuel-injected 449cc engine, responsive throttle, and lightweight chassis, this motorcycle offers excellent maneuverability and control. The Showa suspension system provides a smooth and stable ride, while the advanced electronics and tuning options allow riders to customize the bike to their preferences. Overall, the 2021 Suzuki RM-Z450 is a top choice for riders looking for a high-performance motocross bike that delivers on power and agility. If you're in the market for a competitive motocross motorcycle, the 2021 Suzuki RM-Z450 is a must-see. Its powerful engine, responsive handling, and advanced suspension make it a top contender in the motocross racing scene. With its sleek design and customizable tuning options, this bike is a great choice for riders looking to take their off-road riding to the next level. Whether you're a seasoned racer or a weekend warrior, the 2021 Suzuki RM-Z450 is a bike that delivers both power and precision on the track.Add a Comment
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