2021 Cobra CX50 JR


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2021 Cobra CX50 JR Specifications

MSRP // $4,199 USD *Plus Shipping
Dry Weight // 81 lbs / 36 Kg
Engine // Cobra Venom 50cc 2-stroke
Bore x Stroke // 39mm x 41.7mm
Induction / Case Reed V-Force® Reed Valve 14mm Carb
Cooling // Liquid cooled Top-end and case
Clutch // Cobra 5Gx Freewheeling 3-Shoe
Controls // Pro Taper Micro Bars (5/8″) / Break Forged levers
Transmission // Single-speed auto
Exhaust // Tuned pipe and silencer
Lubrication // Mixture lubrication– Spectro Platinum SX2
Fuel Capacity // .70 Gallons / 2.6 L
Exhaust // Double Cradle 4130 ChrMo
Wheelbase // 908mm
Seat Height // 607mm
Ground Clearance //216mm
Front Brakes // CARD Hydraulic Disk (160mm)
Rear Brakes // CARD Hydraulic Disk (140mm)
Front Suspension // CARD Smart-Leg 32mm USD Fully Adjustable 170mm travel
Rear Suspension // CARD Adjustable Piggyback 170mm travel
Wheel Front / Rear // Cobra 10” Forged & Anodized – Cobra 10” Forged & Anodized
Tires Front / Rear // Dunlop 60/100-10 Geomax MX33 / Dunlop 70/100-10 Geomax MX33


2021 CX50 JR  ” What’s NEW “

NEW! Steering stop design with built-in cushion.

NEW! Forged and anodized wheels made of aircraft-grade Aluminum. These wheels are lighter and stronger featuring an all-new spoke pattern resulting in reduced unsprung weight and improved handling. 10” front and 10” rear.

NEW! Mega Flo Yellow Plastic


2021 CX50 JR  Why Buy a 2021 Cobra CX50 JR

  • Broad Torque Curve
  • Excellent low-end torque and over-rev!
  • No compromise power delivery
  • Venom Series Engine –The P3 is powered by Cobra’s Venom Series 50cc powerplant. This thing rips! Cobra engineers designed a ‘no-compromise’ torque curve featuring massive amounts of low-end torque for launching off the gate and out of corners, this in addition to Cobra’s classic over-rev that provides that ‘2nd gear’ for wide open situations. This little beast offers more power, more torque, less weight and a smaller, lighter package.
  • 5Gx Freewheeling Clutch
  • No plates to warp, Precision, consistent operation. Freewheeling design.
  • Hits as hard at the end of a moto as it does on Lap 1. No clutch drag when the throttle is chopped or during starting.
  • Precision engagement, durable, freewheels for increased corner speed and easier starting.
  • USD 32mm Front Fork
  • Mechanical spring for consistent operation. Improved fork action. ‘Right Sized’ for a small chassis.
  • Inspires confidence over rough terrain
  • REAL air filter
  • Air filter is mounted in airbox, not on top of air box. More surface area, More protection from dirt
  • Dirt or water that enters airbox cannot make its way into the engine. More power (especially in long motos and dusty off-road events)
  • Largest Air box in Class
  • IMPROVED! Air Box – A reshaped airbox opening allows easier installation of the air filter.
  • Improved breathing. Large pre-carburetor volume greatly improves throttle response
  • Power when you need it!
  • NEW! Forged and Anodized Wheels.
  • Made of aircraft-grade Aluminum. These wheels are lighter and stronger featuring an all-new spoke pattern resulting in reduced unsprung weight and improved handling. 10” front and 10” rear.
  • Forged Aircraft Grade Aluminum Triple Clamps
  • All of our 50cc models receive new clamps in 2019. These clamps are lighter, impart less force onto the fork tubes for improved suspension action, and they provide a clamping feature onto the steering stem for improved steering feel.
  • Spreads the clamp load out over a larger area of the fork upper tube
  • Improves fork action
  • Billet Chain Adjuster Blocks
  • Strongest in class
  • Never DNF from a slipping rear axle again!
  • Optimized chassis and bodywork
  • Longest travel suspension in its class by over an inch
  • Absorbs the pounding of rough terrain for better lap time and a less fatiguing ride.
  • Cobra Friction Drive
  • Allows some slip between the crank and rear wheel
  • Longer driveline life (crank, transmission, clutch, chain) and improved drive through rough choppy terrain
  • Progressive Rate Rear Suspension
  • Linear rising rate without a link! Reduced weight, and friction
  • Supple over small bumps for good traction…Absorbs big hits for aggressive riding.
  • Engine / Chassis Package
  • Frame Head Tube and Steering Stem – A thinner wall head tube and a 7075-T6 Aluminum steering stem work together to reduce weight and centralize mass.
  • Dunlop Geomax MX33 Intermediate-Terrain Tires – Dunlop is at it again. In 2019 they introduced the completely re-engineered Geomax MX33. Enhanced grip, improved slide control, and a larger contact patch with the ground all add up to reduced lap times. No corners cut here!
  • IMPROVED! Front Brakes – Further refinements on the CARD front brake system include a more powerful 9.5mm master cylinder piston, improved master cylinder bore finish for better brake feel, and a thinner, more ergonomic brake lever to better fit small hands.
  • IMPROVED! Coil Mounting – The ignition coil is now moved further away from the engine to keep the critical electronic components cooler.
  • IMPROVED! Lightweight Fasteners – Several fasteners have been re-engineered from aircraft grade 7075-T6 Aluminium for even more weight savings.
  • Micro Handle Bars – Cobra is proud to offer Pro-Taper’s innovative Micro Handlebars across our 50cc lineup. These bars will revolutionize the way that young riders control their motorcycles by offering a reduced diameter grip area that inspires confidence and reduced fatigue.
  • No need to remove bodywork or purchase special tools to change a plug or jet the carb!


2021 CX50 JR vs Competition





















2021 CX50 JR Clutch Side












2021 CX50 JR Stator Side













2021 Cobra CX50 JR | 2021 Cobra JR | 2021 Cobra Moto JR

BIKES, Cobra CX50 JR

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