The HW-11A was homologated for the period 2010-2012 and was used to twice win the CIK-FIA European KF2 Title. This is the first model to be fitted with the Tillotson Enrichment Circuit offering excellent performance.


  • New Venturi/Body Design
  • Avenger Class Inlet Needle and Seat Design
  • Avenger Class Idle/Acceleration Nozzle Design
  • Avenger Class Acceleration Fuel Circuit Design

Carburettor Settings:

KF Engines vary by manufacturer, manufacture date and tuning. For optimum performance, you might need to try different settings. Below is a listed of recommended settings, starting with most recent/most popular first. For best results, start with the most recent and then adjust first the High then the Low needle each in 1 minute increments up to 3-5 minutes each (extreme conditions like hot or rainy weather may require a little more). If you are not satisfied, repeat the procedure with the next setting.

L= 1 Turn 0 minutes (1′ 0″); H=1 turn 5 minutes (1′ 05″)

L=1 Turn 15 minutes (1′ 15″); H=42 minutes (0’42”)

Opening Pressure = 0.65 bar
Closing Pressure = 0.55 bar

Repair Kit and Diaphragm Gasket for carburetor:

Main: RK 1 HW and DG 1 HW

Optional: RK 2 HW and DG 2 HW

  • KF2
Weight01 kg
Venturi Diameter


Throttle Bore Diameter


Racing Class

Product Line


Due to the huge demand, we have sold out of our initial supply of TIDL. But don’t worry, our next shipment is due April 25th. You can place your order now and it will ship shortly after that.

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