Precision for air-cooled legends
Hand-assembled, individually tested and engraved with a unique serial number. We build the carburettor your engine needs. This ensures absolute top quality for your classic ride.
Custom-built. Pre-tuned. Ready to run.
Proven baseline
Factory pre-jetted - based on real-world data from our CarbuREADER®.
Save yourself the time-consuming guessing game when dialing in your carbs. We provide you with a tried-and-tested setup that ensures your engine starts reliably and runs smoothly right away. The perfect starting point for your project.
Effortless Syncing
Comes standart with our buillt-in vacuum ports for precise gauge tuning.
Say goodbye to clumsy funnel meters. Hook your gauges directly and securely to our pre-installed ports to achieve a perfectly synced, smooth-running engine in no time.
Built to Spec
Choose between 6 mm and 8 mmm fuel fittings, aligned exactly to your requirements.
You call the shots. We configure your carb exactly to your specifications, allowing it to integrate seamlessly into your existing fuel system. For you, that means true plug & play without the need for pricey adapters.
Highest Quality
CNC-machined venturies for optimal airflow.
We go the extra mile for optimal engine performance. Our CNC-machined venturis optimize the vacuum signal precisely where it matters. We spec the perfect diameter based on your engine data and exact requirements
Here's what you'll find in the package:
- 2 original Fritz Fahrkraft 40 IDF dual carburetors
- Jet package pre-installed according to engine displacement and camshaft specifications
- 4 intake manifold gaskets.
- 2 Stück Original Fritz Fahrkraft Doppelvergaser 40 IDF
- Entsprechend der Hubraum- und Nockenwellenangaben montiertes Düsenpaket
- 4 Stück Saugrohrdichtungen
Original Fritz Fahrkraft IDF 40 carburetors, pre-set for your engine and ready for immediate use.
This carburetor surpasses the quality of all currently available dual carburetors of the proven IDF design on the market. The best cast blank available on the market is finished and assembled by us in Germany. The carburetor has the following technical specifications:
- Finest die-cast, CNC machined
- Closed DIN626 607 2RS ball bearings for the throttle shafts
- CAD designed and CNC turned venturis, Fritz Fahrkraft proprietary development
- Special idle air correction jet, tuned for VW boxer engines
- Transition bores easily accessible, sealed with special NPTF screws
- Fuel connection optionally suitable for 7.5 mm or 5.5 mm fuel hose
- Idle jet extensions
- Vacuum Ports
- Choke cover with countersunk screws
According to your information, we will customize the following settings:
- Float level
- Venturi size
- Main jets
- Air correction jets
- Idle jets
- Accelerator pump volume
We offer you the choice of a fuel connection suitable for hoses with 7.5 mm or 5.5 mm inner diameter.
Up to 100 HP, an inner diameter of 5.5 mm is sufficient. The mechanical fuel pump in good condition can be used. The great advantage is that no alteration of the fuel line system from the tank to the carburetrors is needed and no adapters have to be used.
Upwards of 100 HP, the system pressure may no longer be sufficient and a conversion to a fuel line with a 7.5 mm inner diameter may be necessary. In this case, the entire fuel line system from the tank to the carburettors should be converted accordingly. An electric fuel pump including a safety relay must also be fitted.
Use the carb your engine deserves.
Don't compromise on your air-fuel mixture. Get the carburetor that works right out of the box.
Manufacturer's details (information obligations under the GPSR Product Safety Regulation):
Fritz Fahrkraft GmbH
Dorfstraße 3
23866 Nahe
www.fritzfahrkraft.de



















