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Cobra revolutionized Youth Quad Racing in 2005 with its introduction of the race ready ECX70.  Not only did they win the ATVA 70cc Production National Motocross Championship, but at the final round at Loretta Lynn’s Dude Ranch, Cobras swept the top seven spots in the production class and in addition swept the podium in the 70cc mod class.

Never one to sit back and enjoy their success, they’ve are introducing a new ATV into their lineup for 2006.  They we’ll soon be shipping their all new ECX50.  This little powerhouse will share much of the championship winning Arens chassis hardware with its big brother, the ECX70.  Furthermore, the ECX50’s engine will be based off the same engine that has powered Cobra riders on two wheels to numerous national titles over the past decade.

ECX50 ATV – 50cc Production Class

Their dealers just wouldn’t leave them alone! “We need this product”, they said, so here it is. The ECX50’s smaller size, lighter weight, and automatic transmission make it the ultimate little racer.


  • Shares the ECX70s championship winning Arens frame!
  • Shares the King 50s championship wining engine!
  • Utilizes Cobra Friction Drive technology…Especially important for Quads where driveline durability is at a premium.
  • Lower seat height than the ECX70 so the little guys can maneuver easily


  • Engine: Cobra 50cc 2-stroke
  • Bore X Stroke: 39mm x 41.7mm
  • Induction: Case Reed 19mm carb
  • Cooling: Water Cooled
  • Clutch: Cobra 3-shoe
  • Transmission: Single-speed auto
  • Exhaust: Tuned pipe and silencer
  • Lubrication: Mixture lubrication
  • Frame: Arens design twin spar
  • Wheelbase: 1067mm (track 915mm)
  • Seat Height: 737mm
  • Front Brakes: Hydraulic Disk (160mm)
  • Rear Brakes: Hydraulic Disk (180mm)
  • Front Suspension: Dual A-Arm with SVO patented steering design. 248mm travel
  • Rear Suspension: Ohlins Piggyback 200mm travel Lightweight axle
  • Wheel Front / Rear: ITP 10x5 (4x1) Al ITP 8x6.6 (4x2.5) Al
  • Tires Front / Rear: ITP Holeshot 19/6 Douglas 16/6.50-8

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