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Naked bike · 2023

Hoku 125

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MotoLibrary Score
35 /100 Commuter
Power/Weight
0.11 hp/kg
Engine
125 ccm

2023 Swm Hoku 125 Technical Analysis & Specification Breakdown

Engineered by Swm for the naked motorcycle segment, the 2023 Swm Hoku 125 relies on a 124.7 cc (7.6 cu in) liquid-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 14.8 HP (10.8 kW), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 118.7 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the Hoku 125 measures 136 kg (300 lbs) wet (curb), translating to a power-to-weight ratio of 0.11 HP/kg (9.19 kg per horsepower). Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance.

Specific Output
118.7 HP/L
Power-to-Weight
0.11 HP/kg (9.19 kg/HP)
Standover Height
790 mm (31.1 in)
Engine
Displacement 124.7 ccm (7.61 cubic inches)
Engine Type Single cylinder, four-stroke
Power 14.8 HP (10.8 kW))
Compression 12.8:1
Bore x Stroke 58.0 x 47.2 mm (2.3 x 1.9 inches)
Valves/Cylinder 4
Fuel System Injection
Fuel Control Double Overhead Cams/Twin Cam (DOHC)
Ignition Electronic
Cooling Liquid
Transmission
Gearbox 6-speed
Final Drive Chain (final drive)
Performance
Emission Details Euro 5
Chassis
Front Suspension Kayba upside down telescopic hydraulic fork
Front Travel 250 mm (9.8 inches)
Rear Suspension Kayba progressive “soft damp” single hydraulic shock absorber
Rear Travel 250 mm (9.8 inches)
Wheels & Brakes
Front Tyre 110/70-17
Rear Tyre 140/60-17
Front Brakes Single disc. ABS, floating caliper
Front Brake Ø 300 mm (11.8 inches)
Rear Brakes Single disc. ABS, floating caliper
Rear Brake Ø 220 mm (8.7 inches)
Dimensions & Weight
Weight incl. 136.0 kg (299.8 pounds)
Seat Height 790 mm (31.1 inches) If adjustable, lowest setting.
Other
Starter Electric
Color Options Black/red
Instruments 7-inch TFT Meter
Notes

Italian brand.

More from Swm
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Before You Compare This Bike

Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.

Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🏍️
Best For
City & Weekend Rides
📏
Seat Height
79 cm / 31.1 in
⚖️
Handling
Manageable weight for most riders
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