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All Bikes/Compare/Suzuki Rmz450 vs Yamaha Yz450f

Suzuki Rmz450 vs Yamaha Yz450f

Side-by-side comparison for used motorcycle buyers

Suzuki Rmz450 vs Yamaha Yz450f. Suzuki Rmz450: ~56 hp @ 9,000 rpm (estimate based on dyno testing of modern RM-Z450) hp, 111 kg (curb/wet weight — 2023 model) weight, top speed ~145 km/h (estimate; top speed is not a primary design focus for motocross bikes), Motoryk rating 7.5/10. Yamaha Yz450f: Approximately 60–63 hp @ 9,500 rpm (varies by model year; 2020+ models produce near the upper end) hp, 110 kg (curb/wet weight, approximate for 2018–2023 models; earlier models slightly heavier) weight, top speed Approximately 145–155 km/h (estimate based on dyno and track testing; not an officially published figure), Motoryk rating 8.5/10.

Performance at a Glance

Green = winner per metric · Bars are relative to the higher value

Suzuki Rmz450 Yamaha Yz450f
Horsepower (hp)
56 hp
60 hp
Torque (Nm)
52 Nm
53 Nm
Top Speed (km/h)
145 km/h
145 km/h
Weight (kg) — lower is better
111 kg
110 kg
Type
Motocross
Motocross
Horsepower
~56 hp @ 9,000 rpm (estimate based on dyno testing of modern RM-Z450)
Approximately 60–63 hp @ 9,500 rpm (varies by model year; 2020+ models produce near the upper end)
Torque
~52 Nm @ 7,500 rpm (estimate)
Approximately 53–55 Nm @ 8,000 rpm (estimate; Yamaha does not officially publish torque figures for this model)
Top Speed
~145 km/h (estimate; top speed is not a primary design focus for motocross bikes)
Approximately 145–155 km/h (estimate based on dyno and track testing; not an officially published figure)
Weight
111 kg (curb/wet weight — 2023 model)
110 kg (curb/wet weight, approximate for 2018–2023 models; earlier models slightly heavier)
Fuel
~6.5 L/100km (estimate; varies greatly with riding intensity — motocross use is highly variable)
Estimated 6–8 L/100km under typical motocross/off-road use (note: highly variable depending on riding intensity; no official road consumption figure exists for this competition-focused bike)
Fairing
No
No

Individual Reviews

Suzuki Rmz450
Suzuki Rmz450
7.5/10

"Buy right and maintain it — ignore either and suffer."

Pros
+Sharp, confidence-inspiring handling
+Controllable power delivery
+Excellent suspension components
Cons
Brutal to neglected engines
Expensive valve maintenance intervals
Hard seat stock
Yamaha Yz450f
Yamaha Yz450f
8.5/10

"Brilliant but unforgiving — buy smart or get burned fast."

Pros
+Exceptional power-to-weight ratio
+Class-leading chassis balance
+Strong aftermarket parts availability
Cons
Maintenance intervals brutally short
Punishing for beginner riders
Suspension needs frequent rebuilding

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