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All Bikes/Compare/Harley-davidson Knucklehead vs Yamaha Xsr155

Harley-davidson Knucklehead vs Yamaha Xsr155

Side-by-side comparison for used motorcycle buyers

Harley-davidson Knucklehead vs Yamaha Xsr155. Harley-davidson Knucklehead: ~40 hp @ 4,800 rpm (EL 61ci high-compression; note: factory figures varied by year and configuration) hp, ~249 kg (wet/curb weight) weight, top speed ~153 km/h (95 mph, for the high-compression EL 61ci variant; note: estimate based on period testing), Motoryk rating 7.5/10. Yamaha Xsr155: 19.3 hp @ 10,000 rpm hp, 134 kg (wet/curb weight) weight, top speed approximately 130 km/h, Motoryk rating 8.0/10.

Performance at a Glance

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

Harley-davidson Knucklehead Yamaha Xsr155
Horsepower (hp)
40 hp
19.3 hp
Torque (Nm)
68 Nm
14.7 Nm
Top Speed (km/h)
153 km/h
130 km/h
Weight (kg) — lower is better
249 kg
134 kg
Type
Classic
Classic
Horsepower
~40 hp @ 4,800 rpm (EL 61ci high-compression; note: factory figures varied by year and configuration)
19.3 hp @ 10,000 rpm
Torque
~68 Nm @ 3,000 rpm (estimated)
14.7 Nm @ 8,500 rpm
Top Speed
~153 km/h (95 mph, for the high-compression EL 61ci variant; note: estimate based on period testing)
approximately 130 km/h
Weight
~249 kg (wet/curb weight)
134 kg (wet/curb weight)
Fuel
~7.5 L/100km (estimated, varies significantly by state of tune and riding conditions)
2.8 L/100km or approximately 35 km/L (typical real-world average)
Fairing
No
No

Individual Reviews

Harley-davidson Knucklehead
Harley-davidson Knucklehead
7.5/10

"A magnificent obsession that will test your patience and wallet equally."

Pros
+Unmatched historical significance
+Iconic mechanical character
+Strong collector value retention
Cons
Parts scarce and expensive
Leaks oil constantly
Specialist knowledge essential
Yamaha Xsr155
Yamaha Xsr155
8.0/10

"Best small retro available — just buy a clean, unmolested example."

Pros
+VVA engine genuinely rewarding
+Outstanding build quality
+Bulletproof Yamaha reliability
Cons
Cramped for taller riders
Abused examples are common
Suspension soft when loaded

Top 10 Accessories

Picks that work on either bike.

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SAE 50 mineral motorcycle oil
Engine Oil
SAE 50 mineral motorcycle oil
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Yamalube 10W-40 Full Synthetic 1L
Yamalube · Engine Oil
Yamalube 10W-40 Full Synthetic 1L
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Oil filter for Harley-Davidson Knucklehead
Oil Filter
Oil filter for Harley-Davidson Knucklehead
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HifloFiltro HF141 Oil Filter
HifloFiltro · Oil Filter
HifloFiltro HF141 Oil Filter
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🌬️
Air Filter
Air filter for Harley-Davidson Knucklehead
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🌬️
Air Filter
Air filter for Yamaha XSR155
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Spark plugs for Harley-Davidson Knucklehead
Spark Plugs
Spark plugs for Harley-Davidson Knucklehead
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NGK LMAR8A-9 (x1)
NGK · Spark Plugs
NGK LMAR8A-9 (x1)
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Full-Face Motorcycle Helmet
Helmet
Full-Face Motorcycle Helmet
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Riding Gloves
Gloves
Riding Gloves
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