Fine-tune your engine's thirst with these versatile blank main jets, opening doors to personalized performance mapping.

• Pack of five allows multiple sizing experiments in one go.
• Soft material perfect for precise drilling to match track conditions.
• Enhances throttle progression for smoother power delivery.

For Briggs Animal setups, SKU 555639 provides the canvas for carb experts to paint their ideal jetting. Whether battling high-altitude straights or humid corners, custom orifices ensure your mix stays spot-on, firing up acceleration without hesitation.

Important: These blanks aren't pre-sized for LO206 legality—modification is key to staying rules-compliant. This hands-on approach helps racers organize tuning sessions efficiently, testing iterations to dial in that sweet spot where speed surges.

Imagine exiting a hairpin with pinpoint power, the jets' calibration turning potential into podium potential. It indirectly streamlines pit work, as well-tuned carbs reduce fouling and hesitation, keeping your kart primed for every session.

Frequently Asked Questions

Q: Are these jets pre-drilled for LO206 racing classes?

A: No. These are blank main jets and are not pre-sized. They are intended for custom tuning and engine development. You will need to drill them to your specific requirements, and they are not guaranteed to be legal for LO206 class competition as shipped.

Q: Why should I buy a five-pack of blank jets?

A: Having a five-pack allows you to experiment with multiple jet sizes during a single tuning session. This is essential for finding the optimal air-fuel ratio for varying track conditions, humidity, or altitude without needing to stop and re-drill a single jet repeatedly.

Q: What tools do I need to use these blank jets?

A: You will need a set of precision jet drills or a carburetor jet sizing tool kit. Because the material is soft, it is designed to be easily machined to your exact specifications to ensure precise fuel delivery.

Q: How do I know what size to drill my jets to?

A: Sizing depends on your specific engine build, exhaust, and atmospheric conditions. We recommend starting with a smaller drill bit and testing in small increments. Always monitor your spark plug color and engine temperature to ensure you are not running too lean or too rich.

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