Keyster FS-5598NU Carburetor Fuel Condition Kit – Fits Suzuki GSX400X Impulse GK71E (ML/MR Side)

Rebuild your Suzuki GSX400X Impulse (GK71E) with precision using the Keyster FS‑5598NU Carburetor Fuel Condition Kit, crafted in Japan for the AISAN 2-barrel carburetors used on the middle-left (ML) or middle-right (MR) side of this unique four-carb setup. Whether restoring, tuning, or performing maintenance, this all-in-one kit includes every component you need to overhaul one side of your carburetor system.

🔩 Exact Fit For:

• Motorcycle: Suzuki GSX400X Impulse

• Frame Code: GK71E

• Carburetor Type: AISAN 2-barrel (ML / MR side)

• Quantity: Kit for one side only

• For LH / RH side, order Keyster FS‑5598NS

🛠 Full Kit Components:

• Float Chamber Gasket

• Main Jets (2 per size): #93 / #95 / #98 / #101 / #105 / #110

• Pilot Jets (2 per size): #33 / #34 / #37

• Jet Needles (2 each of 4 sizes): 5C15 = Y694‑S

• Needle Jets x2

• Needle Valve (#2.5)

• Pilot Screws x2

• Starter Plunger

• E-Clips x8

• Springs x2

• Drain Screw

• O-Rings x2

✅ Why This Kit is Essential for Your GK71E:

• Designed specifically for AISAN 2-barrel carbs on the GSX400X Impulse

• Complete tuning range for jetting and needle adjustments

• Ideal for vintage JDM motorcycle restoration or performance maintenance

• Japanese-manufactured components ensure OE-quality fit and reliability

• Compatible with classic GSX400X Impulse multi-carburetor setups (ML/MR)

🔧 Additional Notes:

• Sold per side: Price is for one carburetor only (ML or MR)

• For full system overhaul, order FS‑5598NU + FS‑5598NS

• Instruction manual may be included in Japanese