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Keihin FCR carburetor overbore. We disassemble inspect and clean your factory carb. Rejet and install our extended custom fuel screw.
Overbore's are available up to 44mm. Carbs bored up to 41mm using the stock venturi. 42-44mm requires use of our custom billet venturi and custom jet kit.
We also offer a dual spray accelerator pump kit. This sprays two very fine streams of fuel rather than one large stream like the stock Keihin accelerator pump, allowing a more complete fuel burn under acceleration which results in more power and better response
Redirects fuel flow and improves throttle response.
Virtually eliminates bogging
Increases bottom end performance
Improved fuel efficiency
Works with fixed or adjustable leak jets
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