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CTn-7

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2022 EFRA EUROPEAN CHAMPION

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  • Built with a high precision die cast pressure injected black coated aluminium crank case and combined with long stroke precision balanced DLC black coated crankshaft with silicon insert it produces a smooth powerband making it very ease to drive while giving instant crisp throttle response.  The carburetor features a single bottom needle for easy tuning while providing excellent fuel efficiency giving the racer a strategic advantage during the long finals.  The lightweight aluminium machined piston is hand selected to perfectly match the 7 port sleeve.  Finally high quality ball bearings both front and rear, with double seals at the front end for better protection and ceramic at the rear supporting the crank shaft, longer life and smoother operation is achieved.  Designed, developed and produced in Europe from the expert World Champions Adrien Bertin and David Ronnefalk we are excited to supply the racers around the world with a product reaching the highest performance standards.

  • 7 ports sleeve with machined piston

  • Long stroke engine

  • Balanced and DLC coated crankshaft

  • Front beraing with double sealing for perfect seal

  • Rear ceramic bearing

  • Carburator with single bottom needle for easy tuning

  • Designed developed produced in Europe

  • Excellent feel and fuel efficiency

  • CNC lightweight 7 ribs head

  • Displacement 3.49cc / 0.213 cu.in.

CNC lightweight 7 ribs aluminum cooling head

Black anodized High Torque Design backplate

Precision balanced DLC coated black crankshaft with silicon insert

Die cast pressure injected black coated aluminum crank case

Single bottom needle carburetor

Selected machined piston for perfect fit

  • Bore 

  • Stroke 

  • Estimated ps 

  • Operating RPM

  • Weight

  • Height

  • Head Height

  • Head Diameter

: 16,19 mm

: 16,90 mm

: 2.70 / 35.000 rpm

: 4.000 / 45.000

: 355gr

: 103 mm

: 37.50 mm

: 59,50 mm

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