Cobra CX50 Junior - Specifications & Review

CX50 Junior

Article Complete Info

Articleid21657
CategoryMinibike-cross
MakeCobra
ModelCX50 Junior
Year2012

Chassis, Suspension, Brakes & Wheels

FrametypeDouble Cradle 4130 CrMo steel
FrontbrakesSingle disc
Frontbrakesdiameter160 mm (6.3 inches)
FrontsuspensionCARD 30mm USD
Fronttyre2.50-10
Frontwheeltravel170 mm (6.7 inches)
RearbrakesSingle disc
Rearbrakesdiameter140 mm (5.5 inches)
RearsuspensionCARD Adjustable Piggyback
Reartyre2.75-10
Rearwheeltravel170 mm (6.7 inches)
WheelsCobra 10 inch Billet

Engine & Transmission

Borexstroke39.0 x 41.7 mm (1.5 x 1.6 inches)
ClutchCobra 3Gx 3-Shoe
CoolingsystemLiquid
Displacement50.00 ccm (3.05 cubic inches)
EnginedetailsSingle cylinder, two-stroke
EnginetypeV-Force Reed Valve
ExhaustsystemTuned pipe and silencer
FuelsystemCarburettor
Gearbox1-speed
LubricationsystemMixture lubrication
TransmissiontypefinaldriveChain

Other Specifications

ColoroptionsYellow/red/black/white
ModificationscomparedtopreviousmodelRear disk brake.
StarterKick

Physical Measures & Capacities

Dryweight36.7 kg (81.0 pounds)
Groundclearance216 mm (8.5 inches)
Seatheight607 mm (23.9 inches) If adjustable, lowest setting.

About Cobra

Country of Origin: United States
Founder: Budd Maimone
Best Known For: High-performance 50cc/65cc kids’ motocross racers that win national titles

Company History

Cobra Moto reshaped youth motocross in the 1990s by proving that purpose-built race machinery for kids could be engineered with the same rigor as pro bikes. Founded by engineer Budd Maimone, the company targeted the intensely competitive 50cc and later 65cc classes that serve as the sport’s talent pipeline in the United States. Instead of detuned play bikes, Cobra delivered hand-on-the-pulse race tools: potent two-stroke engines, stiff yet lightweight frames, quality suspension, and ergonomics scaled for small riders. The results were immediate—Cobra machines began stacking up championships at events like Loretta Lynn’s Amateur Nationals, giving countless future pros their first taste of a green flag on equipment designed expressly for them. Beyond power, the brand’s secret sauce was development velocity. Feedback from families and regional tuners flowed into rapid updates, and parts support was structured so weekend warriors could keep bikes in the hunt with minimal downtime. That ecosystem—fast spares, setup guides, and a tight-knit paddock community—turned ownership into an education for both kids and parents. Cobra’s success also nudged larger manufacturers to take the youth segment more seriously, raising the technical baseline for everyone. Historically, the company’s impact reaches far beyond podium photos: it professionalized junior racing, taught young riders the language of chassis feel and jetting, and gave aspiring mechanics their first lessons in discipline and detail. For many American racers, the path to big bikes began with a yellow machine that felt like a real motorcycle, scaled perfectly to small hands, big dreams, and rutted tracks under summer heat.

Other Years

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