Enduro Bikes

2021Sinnis 125 Terrain

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The 2021 Sinnis 125 Terrain is an affordable entry-level enduro bike suited for novice off-road riders seeking lightweight versatility. Powered by an 11.1 hp single-cylinder four-stroke engine with EFI fuel injection, it delivers manageable performance for trail riding and casual adventures. Its telescopic forks, monoshock rear suspension, and dual front disc brakes provide reliable handling across mixed terrain.

Capacity: 125.0 ccm
Engine: Single, four-stroke
Gearbox: 5-speed
Dry weight: 150.0 kg
Seat height: 800 mm
Power: 11.1 HP (8.1 kW) @ 9500 RPM

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How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail55%

Cornering45%

City riding60%

Daily riding55%

Touring30%

Two-up25%

Track10%

Best for: Designed as an entry-level, road-biased trail bike for light commuting, learning, and occasional mild off-road excursions rather than serious adventure riding.
Built for: A friendly, unintimidating small-capacity trail-styled bike that favors approachability over outright performance.
Not ideal for: Not suitable for experienced riders seeking highway speed, long-distance touring comfort, or genuine hardcore off-road capability.

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

Will it fit you?

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Your height

Inseam (optional)

Units

At 800mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2021 Sinnis 125 Terrain, with a cramped knee angle of around 70 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 751-820 mm — Middle Ground →

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Full specifications

Engine

Capacity: 125.0 ccm
Power: 11.1 HP (8.1 kW) @ 9500 RPM
Engine type: Single, four-stroke
Power/weight ratio: 0.0740 HP/kg (dry)
Cooling system: Air
Fuel system: Injection
Starting: Electric
Torque: Not on record - add it

Transmission

Gearbox: 5-speed
Transmission type: Manual

Dimensions & weight

Wheelbase: 1370 mm
Overall length: 2090 mm
Overall width: 865 mm
Overall height: 1280 mm
Seat height: 800 mm
Dry weight: 150.0 kg
Fuel capacity: 14.00 litres
Ground clearance: Not on record - add it

Chassis & suspension

Front suspension: Telescopic USD forks
Rear suspension: Monoshock

Brakes & wheels

Front brakes: Double disc. Two-piston calipers.
Rear brakes: Single disc
Front tyre: 100/80-17
Rear tyre: 120/80-17

Other

Color options: Satin Silver, Rosso Red

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 Sinnis 125 Terrain motorcycle is a versatile and stylish option for riders looking for a reliable and capable off-road machine. With a 125cc engine and rugged design, this bike is equally at home on city streets as it is on dirt trails. The Terrain's lightweight frame and responsive handling make it a joy to ride, while its comfortable seat and ergonomic design ensure that long journeys are a breeze. Whether you're a beginner or experienced rider, the Sinnis 125 Terrain is a great choice for those who want a reliable and affordable dual-purpose motorcycle.

In conclusion, the 2021 Sinnis 125 Terrain motorcycle is a fantastic option for riders who want a versatile and capable off-road machine. With its powerful 125cc engine, rugged design, and comfortable ride, this bike offers a great balance of performance and practicality. Whether you're hitting the trails or navigating city streets, the Sinnis 125 Terrain is a reliable and stylish choice that won't break the bank. Consider this motorcycle for your next off-road adventure.

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