Naked Motorcycles

2021CSC Motorcycles SG400

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The 2021 CSC Motorcycles SG400 is a beginner-friendly naked bike powered by a 378cc twin-cylinder engine delivering 48.5 horsepower. It suits new riders seeking affordable, manageable performance with its modest power delivery and accessible riding position. Known for straightforward reliability and classic styling, this entry-level machine offers practical commuting capability with a six-speed transmission and liquid-cooled engine.

Capacity: 378.0 ccm
Engine: Parallel Twin, four-stroke
Gearbox: 6-speed
Wet weight: 184.0 kg
Seat height: Not on record
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Power: 48.5 HP (35.4 kW) @ 9000 RPM

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How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail20%

Cornering70%

City riding80%

Daily riding75%

Touring35%

Two-up45%

Track40%

Best for: Best suited to everyday commuting, urban riding, and casual weekend fun rather than serious performance or long-distance travel.
Built for: A retro-styled, spoked-wheel naked bike with a classic megaphone exhaust that favors charm and simplicity over outright speed.
Not ideal for: Not the right choice for riders seeking high-speed touring, aggressive track performance, or off-road capability.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Full specifications

Engine

Capacity: 378.0 ccm
Power: 48.5 HP (35.4 kW) @ 9000 RPM
Torque: 35.0 Nm (3.6 kgf-m) @ 6500 RPM
Engine type: Parallel Twin, four-stroke
Power/weight ratio: 0.2636 HP/kg (wet)
Bore x stroke: 66.0 x 55.2 mm
Cooling system: Liquid
Fuel system: Carburettor
Starting: Electric

Transmission

Gearbox: 6-speed
Transmission type: Manual

Performance

Top speed: 154.5 km/h (96.0 mph)

Dimensions & weight

Wheelbase: 1380 mm
Overall length: 2065 mm
Overall width: 810 mm
Overall height: 1120 mm
Wet weight: 184.0 kg
Fuel capacity: 19.00 litres
Ground clearance: 145 mm
Seat height: Not on record - add it
Dry weight: Not on record - add it

Chassis & suspension

Frame: Robotically welded steel tube
Front suspension: Inverted forks 41mm
Rear suspension: Preload-adjustable dual shocks
Rear wheel travel: 61 mm
Rake (fork angle): 25.0°
Trail: 99 mm

Brakes & wheels

Front brakes: Double disc. ABS
Front brakes diameter: 305 mm
Rear brakes: Single disc
ABS: Yes
Front tyre: 120/70-17
Rear tyre: 150/70-17

Other

Color options: Metallic Gray Gloss, Sinister Matte Black
Comments: Brand previously called California Scooters. Bike imported from China.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

Rider Reviews

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MotorcycleDB

The 2021 CSC Motorcycles SG400 is a high-performance motorcycle that offers an incredible riding experience. With its powerful engine and sleek design, this bike is sure to turn heads on the road. The SG400 also handles exceptionally well, making it perfect for both daily commutes and long weekend rides. Whether you're a seasoned rider or a beginner, this motorcycle is a great option for anyone looking for a reliable and stylish bike.

In addition to its impressive performance, the 2021 CSC Motorcycles SG400 also boasts a range of advanced features, including a comfortable seat, intuitive controls, and excellent fuel efficiency. With its affordable price point, this bike offers tremendous value for riders looking for a quality motorcycle without breaking the bank. Overall, the SG400 is a fantastic choice for anyone in the market for a new motorcycle, offering a perfect balance of style, performance, and affordability.

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