Minibikes

2021Cobra CX50SRX FWE

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The 2021 Cobra CX50SRX FWE is a lightweight 50cc minibike engineered for young riders and beginners seeking an affordable entry into off-road riding. Powered by a liquid-cooled two-stroke engine with V-Force reed valve technology and a tuned exhaust system, it delivers responsive performance in a compact package. Best suited for training and casual trail use, this automatic-transmission bike combines durability with ease of operation for novice riders.

Capacity: 50.0 ccm
Engine: Single, two-stroke
Gearbox: Not on record
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Dry weight: 40.5 kg
Seat height: 680 mm
Power: 5.4 HP (4.0 kW)

⇄ Compare with another bike ＋ Add to garage All model years

Other years 2021 2022 2023 2024

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail90%

Cornering80%

City riding5%

Daily riding5%

Touring5%

Two-up0%

Track60%

Best for: Built purely for junior motocross and off-road track practice, not for general riding, commuting, or adult use.
Built for: A proper miniature motocrosser with fully adjustable premium suspension and disc brakes, mimicking full-size MX bike handling and feel in a scaled-down package.
Not ideal for: Not for adults, highway or road use, touring, passengers, or anyone expecting real speed or long-distance comfort.

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

Full specifications

Engine

Capacity: 50.0 ccm
Power: 5.4 HP (4.0 kW)
Engine type: Single, two-stroke
Power/weight ratio: 0.1333 HP/kg (dry)
Bore x stroke: 39.0 x 41.7 mm
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Lubrication system: Mixture lubrication

Transmission

Transmission type: Automatic
Clutch: Cobra 5Gx Freewheeling 3-Shoe

Dimensions & weight

Wheelbase: 1038 mm
Seat height: 680 mm
Dry weight: 40.5 kg
Fuel capacity: 2.80 litres
Ground clearance: 245 mm

Chassis & suspension

Frame: Hybrid Oval/Backbone Twin Spar
Front suspension: CARD Smart-Leg 32mm USD Fully Adjustable
Rear suspension: CARD Fully Adjustable (High and Low Speed)
Front wheel travel: 210 mm
Rear wheel travel: 248 mm

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 160 mm
Rear brakes: Single disc
Front tyre: 60/100-12
Rear tyre: 70/100-10

Other

Color options: Yellow/red/white/black

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

What changed, year to year

Differences highlighted

Specification	2021	2022	2023	2024
Capacity	50 cc	50 cc	50 cc	50 cc
Dry weight	41 kg	40 kg	40 kg	40 kg
Seat height	680 mm	680 mm	680 mm	680 mm
Fuel capacity	2.8 L	2.8 L	2.8 L	2.8 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB

The 2021 Cobra CX50SRX FWE is a powerful and high-performance motocross bike that's perfect for riders of all skill levels. With its rugged design and top-of-the-line components, this motorcycle is sure to impress even the most discerning riders. The FWE (Factory Works Edition) version of this bike boasts enhanced features and performance upgrades, making it stand out from its predecessors. Whether you're hitting the trails or tearing up the track, the CX50SRX FWE offers unbeatable speed, agility, and handling for an exhilarating riding experience.

One of the standout features of the 2021 Cobra CX50SRX FWE is its impressive power-to-weight ratio, allowing for unmatched acceleration and top speed. The bike's state-of-the-art suspension system and lightweight frame provide excellent maneuverability and control, making it a top choice for serious motocross enthusiasts. With its durable construction and reliable performance, the CX50SRX FWE is a fantastic option for anyone looking for a high-end motocross bike that delivers on both power and precision.

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