Keyster FS-5522N Carburetor Fuel Adjustment Kit – For Suzuki GSX750S GR72A

Take full control of your carburetor tuning with the Keyster FS-5522N Fuel Adjustment Kit — designed for one carburetor (one cylinder). Whether you're restoring your Suzuki GSX750S GR72A or optimizing it for performance upgrades, this kit gives you the precision to fine-tune fuel delivery across the full throttle range.

Ideal for troubleshooting fuel issues or adjusting your setup after intake/exhaust modifications, this complete kit includes jets, gaskets, screws, and the award-winning AA Needle Valve for superior sealing and responsiveness.

🔩 What's Included:

• Float chamber gasket

• Main jets (6 sizes)

• Pilot jets (3 sizes)

• Jet needles (4 profiles: L / S / R / RR)

• Needle valve (AA Needle)

• Needle jet

• Pilot screw, spring, washer, O-ring

• E-clip

• Drain plug

• Packing

• Rubber flag

• Starter plunger

Note: This kit services 1 carburetor (1 cylinder).
Specifications may change based on the manufacturer's updates.
Images shown are for reference and may not exactly match contents.
Instruction manual may be included in Japanese only.

🌟 Why Riders Choose Keyster:

• Precise Tuning Control: Jets are intentionally sized with uneven steps for fine-tuning fuel delivery at low, mid, and high RPMs.

• AA Needle Valve: High-performance rubber tip offers superior fuel cutoff — better than most OEM parts.

• Fix Common Carb Issues: Resolves poor idling, hard starts, and uneven throttle response.

• Tune for Mods: Essential when upgrading air filters or exhaust systems — helps re-balance the air/fuel mixture.

🧠 Tuning Tip:

To lean the air-fuel mix, choose L-direction components. To richen it, use R-direction parts. Adjust combinations of L / S / R to target specific RPM ranges.