Yamaha Yz 450 F vs Ktm Sx-f 450
Side-by-side comparison for used motorcycle buyers
Performance at a Glance
Green = winner per metric · Bars are relative to the higher value
Yamaha Yz 450 F
Ktm Sx-f 450
Horsepower (hp)
62 hp
63 hp
Torque (Nm)
52 Nm
54 Nm
Top Speed (km/h)
145 km/h
175 km/h
Weight (kg) — lower is better
110 kg
101 kg
Type
Motocross
Motocross
Horsepower
~62 hp @ 9,500 rpm (note: figure based on modern 2020+ models; earlier models ranged 55-60 hp)
~63 hp @ 9,000 rpm (estimated for recent 2022-2024 models; KTM does not officially publish dyno figures)
Torque
~52 Nm @ 7,500 rpm (note: estimated based on published dyno data for recent models)
~54 Nm @ 7,000 rpm (estimated for recent models; note: official figures not published by KTM)
Top Speed
~145 km/h (note: estimated under optimal conditions on a straight; varies by rider and terrain)
~175 km/h (estimated; note: varies with gearing and terrain)
Weight
110 kg (wet/curb weight, based on 2020+ models)
101 kg (wet/curb weight — 2023 model)
Fuel
Estimate: ~6-8 L/100km under typical motocross/off-road riding conditions (note: highly variable depending on riding intensity; not designed for road use)
~6-9 L/100km (estimated real-world; varies heavily with riding intensity — note: no official figure provided by KTM for off-road race use)
Fairing
No
No
Individual Reviews
Yamaha Yz 450 F
8.5/10
"An unforgiving elite machine that rewards experienced, mechanically-aware riders only."
Pros
+Bulletproof engine when maintained
+Reverse cylinder improves balance
+Electric start on later models
Cons
−Brutal for inexperienced riders
−Maintenance intervals are short
−Suspension wears quickly hard use
Ktm Sx-f 450
8.5/10
"A brilliant machine that demands respect, research, and deep pockets."
Pros
+Best-in-class power delivery
+WP suspension genuinely race-spec
+Excellent parts availability
Cons
−Maintenance intervals brutally short
−Expensive rebuild costs
−Unforgiving for beginners
Top 10 Accessories
Picks that work on either bike.
