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All Bikes/Compare/Suzuki Rm-z 450 vs Yamaha Yz250f

Suzuki Rm-z 450 vs Yamaha Yz250f

Side-by-side comparison for used motorcycle buyers

Suzuki Rm-z 450 vs Yamaha Yz250f. Suzuki Rm-z 450: ~56 hp @ 9,500 rpm (estimated for modern 2018+ spec) hp, 110 kg (wet/curb weight) weight, top speed ~145 km/h (estimated; dependent on gearing and terrain), Motoryk rating 7.8/10. Yamaha Yz250f: ~40 hp @ 12,500 rpm (estimated for modern 2019+ models; earlier models slightly less) hp, ~105 kg (wet/curb weight — 2020+ models; earlier models slightly heavier) weight, top speed ~145 km/h (estimated; not designed for top speed — purpose-built motocross racer), Motoryk rating 8.5/10.

Performance at a Glance

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

Suzuki Rm-z 450 Yamaha Yz250f
Horsepower (hp)
56 hp
40 hp
Torque (Nm)
51 Nm
26 Nm
Top Speed (km/h)
145 km/h
145 km/h
Weight (kg) — lower is better
110 kg
105 kg
Type
Motocross
Motocross
Horsepower
~56 hp @ 9,500 rpm (estimated for modern 2018+ spec)
~40 hp @ 12,500 rpm (estimated for modern 2019+ models; earlier models slightly less)
Torque
~51 Nm @ 7,500 rpm (estimated)
~26 Nm @ 10,000 rpm (estimated)
Top Speed
~145 km/h (estimated; dependent on gearing and terrain)
~145 km/h (estimated; not designed for top speed — purpose-built motocross racer)
Weight
110 kg (wet/curb weight)
~105 kg (wet/curb weight — 2020+ models; earlier models slightly heavier)
Fuel
~5.5 L/100km (estimated; highly variable under race/off-road conditions)
~5.5 L/100km / ~18 km/L (estimated; varies significantly with riding intensity — note: off-road/motocross use makes precise figures difficult to pin down)
Fairing
No
No

Individual Reviews

Suzuki Rm-z 450
Suzuki Rm-z 450
7.8/10

"Fast, rewarding, but only buy one with full service history."

Pros
+Explosive, confidence-inspiring power
+Excellent factory suspension platform
+Strong parts availability
Cons
Valve maintenance costs add up
Unforgiving for beginners
Thirsty on fuel
Yamaha Yz250f
Yamaha Yz250f
8.5/10

"The used YZ250F is a brilliant buy with documented service history."

Pros
+Bulletproof when properly maintained
+Best-in-class KYB suspension
+Predictable, confidence-inspiring handling
Cons
Valve maintenance costs add up
Older models feel underpowered
Parts aren't cheap

Top 10 Accessories

Picks that work on either bike.

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Handlebar Phone Mount
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Waterproof Motorcycle Cover
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Roadside Tool Kit
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Helmet Action Camera
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