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- 2021 Cobra CX50SRX KING-

Highlights & Improvements

Venom Series Engine  – The 2021 King 50 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.

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.

Spectro Factory Fill – Cobra and Spectro, two proud American companies with a long history in motocross, have teamed up to ensure that each Cobra model comes from the factory with the finest in lubricants and chemicals. This includes everything from wheel bearing grease, to brake fluid, to suspension fluid, to the oil on the air filter.

5Gx Freewheeling Clutch - Precision engagement, durable, freewheels for increased corner speed and easier starting.

Revolutionary MXT “Smart Leg” Front Fork – Cobra’s exclusive 32mm USD CARD cartridge fork is the finest fork in minicycle racing! The Smart architecture simultaneously provides supple action over small bumps, and progressive control through the biggest of hits…A feature especially important for minicycles that run on tracks torn up by bikes twice their size! This fork also features fully adjustable rebound and compression damping and bottoming control adjustment not found on any other fork of any size!

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. 12” front and 10” rear.

NEW! Hybrid Oval twin spar/Backbone frame with revised structure and removable aluminum subframe. The new chassis reduces weight, improves handling, permits a twin radiator system, eases maintenance, and is stronger.

NEW!  Twin radiator system improves cooling, reduces power loss to heat, and increases ground clearance.

NEW!  Longer wheelbase improves high speed stability.

NEW!  CARD rear shock has revised valving and improved reservoir design that tucks in better creating a slimmer mid-section.

NEW!  Quick change air filter with vertical orientation reduces the chance dirt encroachment into the engine.

NEW! Air boot/Air box design provides over 2x the volume of clean air between the filter and the carburetor resulting in more power everywhere.

NEW! Steering stop design with built-in cushion.

NEW!  Ergonomics provide a slimmer, flatter seat for easier fore-aft transitions and accommodation for a larger range of rider size.

NEW!  Works style tuned pipe for increased power and a flatter torque curve. The result: earlier clutch engagement for improved rideability and more over-rev for enhanced top speed.

NEW!  Ergonomic hand holds that make lifting the bike easier both at the starting gate and onto the stand.

NEW! Exhaust pipe and silencer combination: Pipe layout and tuning spec add both low-end torque and top-end power.

NEW! Chassis geometry: Longer wheelbase for improved stability. Shorter swingarm for reduced rear-end kick over braking bumps. Increased rake provides both improved stability and smoother cornering. Lengthened head tube stiffens front end for enhanced steering feel.

IMPROVED!  Fork settings resulting in improved handling on the roughest of tracks.

NEW! Mega Flo Yellow Plastic.

2021 Cobra CX50SRX King Specifications

MSRP // $4,399 USD *Plus Shipping

Dry Weight // 89 lbs / 40.5 Kg

Engine // Cobra Venom 50cc 2-stroke

Bore x Stroke // 39mm x 41.7mm

Induction // Case Reed V-Force® Reed Valve 19mm Carb

Cooling // Water cooled Top-end and Case / Twin Radiator

Clutch // Cobra 5Gx Freewheeling 3-Shoe

Controls // Pro Taper Micro Bars (5/8″) / Breakaway Forged Levers

Transmission // Single-speed auto

Exhaust // Tuned pipe and silencer

Lubrication // Mixture lubrication – Spectro Platinum SX2

Fuel Capacity // .75 Gallons / 2.8L

Frame // Hybrid Oval/Backbone Twin Spar

Wheelbase // 1038mm

Seat Height // 680mm

Ground Clearance // 245mm

Front Brakes // CARD Hydraulic Disk (160mm)

Rear Brakes // CARD Hydraulic Disk (140mm)

Front Suspension // CARD Smart-Leg 32mm USD Fully Adjustable 210mm travel

Rear Suspension // CARD Fully Adjustable (High & Low Speed) 248mm travel

Wheel Front / Rear // Cobra 12″ Billet Hard Anodized/ Cobra 10″ Billet Hard Anodized

Tires Front / Rear // Dunlop 60/100-12 Geomax MX33 / Dunlop 70/100-10 Geomax MX33