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Suzuki Rmz450
Motocross

Suzuki Rmz450

The Suzuki RM-Z450 was introduced in 2005 as a four-stroke motocross machine, replacing the RM250 two-stroke in Suzuki's lineup and competing directly with Honda's CRF450R and Yamaha's YZ450F. It gained significant updates in 2008 with a new frame and fuel injection was added in 2013, making it one of the earlier motocross bikes to adopt EFI technology. The RM-Z450 has been a staple in both amateur and professional motocross, with factory riders achieving strong results in AMA Supercross and Motocross championships.

~56 hp

Power

~52 Nm

Torque

111 kg

Weight

~145 km/h (estimate; top speed is not a primary design focus for motocross bikes)

Top Speed

~6.5 L/100km (estimate; varies greatly with riding intensity — motocross use is highly variable)

Fuel

Naked

Body

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What Buyers Should Know

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Watch the Top End

The RMZ450 requires piston and valve inspections every 15-20 hours of ride time. Skipping this maintenance is the most common cause of costly engine failures on used bikes.

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Strong Resale Value

The RMZ450 holds its value well compared to competitors, often retaining 60-70% of its price after one year. Low-hour, well-maintained examples are consistently in high demand.

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Fuel Injection Advantage

Starting with the 2013 model, Suzuki added fuel injection, dramatically improving cold starts and throttle response. Buyers should target 2013 or newer models for a significantly more reliable and tunable experience.

Full Specifications

Engine Power ~56 hp @ 9,000 rpm (estimate based on dyno testing of modern RM-Z450)
Torque ~52 Nm @ 7,500 rpm (estimate)
Top Speed ~145 km/h (estimate; top speed is not a primary design focus for motocross bikes)
Weight 111 kg (curb/wet weight — 2023 model)
Fuel Consumption ~6.5 L/100km (estimate; varies greatly with riding intensity — motocross use is highly variable)
Type Motocross
Fairing No Fairing (Naked)

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