Suzuki RM-Z450

The Suzuki RMZ450 is a high-performance motocross bike featuring a 449cc liquid-cooled single-cylinder engine that delivers 55 hp and 50 Nm of torque. You’ll appreciate its lightweight 112 kg aluminum twin-spar frame and race-ready dimensions with a 960mm seat height. The bike runs on 21-inch front and 19-inch rear wheels with specialized knobby tires for ideal off-road traction. Discover why this machine has remained a competitive choice since 2005.

Suzuki, produced from 2005 to the present.

Engine and Displacement of Suzuki RMZ450

449cc liquid-cooled 4-stroke single-cylinder DOHC 4-valve.

Chassis of Suzuki RMZ450

Twin-spar aluminum perimeter frame.

Wheels & Tires of Suzuki RMZ450

Front: 21-inch; Rear: 19-inch. Dunlop MX52 or MX33 knobby tires.

Transmission and Clutch of Suzuki RMZ450

5-speed constant mesh, wet multi-plate clutch, chain drive.

Fuel System and Fuel Capacity of Suzuki RMZ450

Keihin EFI (post-2008), Keihin FCR carburetor (2005-2007). 6.2L (1.64 gal).

Weight, Seat Height, Dimensions, Wheelbase

• Weight: 112 kg (247 lbs)
• Seat Height: 960 mm (37.8 inches)
• Dimensions: 2185×825×1260 mm (86.0×32.5×49.6 inches)
• Wheelbase: 1480 mm (58.3 inches)
• Ground Clearance: 325 mm (12.8 inches)

Top Speed and Technical Details of Suzuki RMZ450

• Power: 55 hp/41 kW @ 9000 rpm
• Torque: 50 Nm @ 7500 rpm
• Bore × Stroke: 96.0 × 62.1 mm
• Compression ratio: 12.5:1
• Top speed: 120 km/h (75 mph)
• Rake/Trail: 28.5 degrees/122 mm (4.8 inches)

Summary of Suzuki RMZ450

The Suzuki RMZ450 is a competition motocross motorcycle featuring a 449cc liquid-cooled single-cylinder engine housed in an aluminum twin-spar frame.

• Weighing 112kg (247lbs), this race-ready machine underwent significant redesigns in 2008 (EFI introduction), 2013, and 2018.
• Identifiable by its yellow bodywork with blue accents, the RMZ450 features a distinctive single exhaust system (dual exhaust pre-2008).
• Common replacement parts include radiators, plastic body panels, suspension components, and subframes.
• Engine numbers are located on the right crankcase near the countershaft sprocket, while VIN plates are attached to the steering head.
• Parts compatibility typically groups 2005-2007, 2008-2012, 2013-2017, and 2018-present models, with each generation requiring specific components.

Confirm the Suzuki RM-Z450 Generation

RM-Z450 parts changed across model updates, including fuel delivery, frame components, bodywork and electronics. Send the model year, VIN, engine number and any part or casting number. Photographs should show the complete component, both mounting sides and any plugs, hoses or brackets that need to be included.

Assess Motocross Parts by Condition, Not Appearance

Motocross use can place heavy loads on wheels, suspension, radiators, subframes and engine cases. Check for damaged threads, distorted mounts, repairs, cracks and wear around bearings or pivots. For engines and electrical components, ask what inspection information is available and confirm exactly what is included before treating the part as a complete assembly.

Sydney RM-Z450 Parts and Bike Enquiries

For a parts request, include the exact component, model year and close photographs. For a complete motorcycle, provide the Sydney suburb, running and rolling condition, known damage, missing parts and access details. This allows the enquiry to be assessed without assuming that parts interchange between RM-Z450 generations.

Find information about other models on our Suzuki motorcycle parts in Sydney page.