Description
Whether you are performing routine maintenance or restoring your Hyosung’s carburettors, this comprehensive carb rebuild kit is a must-have. Designed to fix common fueling issues and restore your carburettor’s optimal function, this kit contains all the essential components to ensure smooth, reliable performance and longevity.
A carefully selected bundle of high-quality Japanese-made components designed to help your Hyosung carburettor fix fueling issues or rebuild an idle carb with ease.
💎 Restore Peak Performance
This kit ensures your Mikuni Japanese carbs are running at their best, eliminating common faults associated with old, hardened seals and worn float needles.
| Component | Details |
|---|---|
| Float Bowl Gaskets (x2) | New O-Rings for both Front & Rear Carburettors. |
| Float Needle Assembly Kit | New needles, seats, and various small o-rings for a leak-free seal. |
| Bonus Stainless Bolts (x8) | Free upgrade for the float bowls. [Need more?] |
| Pilot Mixture Screw O-Rings | Spare washers and O-rings included as a #freebie. |
📜 Confirmed Fitment (Carb Models Only):
📃 Reference OEM Part Numbers: 13323HG5100 / 13375HG5100 / 13376HG5100
| GT125R & 125RC (All years) | GV125 Aquila (up to 2017 only!) | GT125 Naked (All years) |
| GV250 Carby | GT250 Carby | GT250R Carby |
🔧 Installation Tips & Advice
Follow these steps to ensure a perfect rebuild and avoid common pitfalls:
- **Cleanliness is Key:** Thoroughly clean the carburettor body and all parts with a carb cleaner spray before installation.
- **Soak the Bowls:** Take care when installing the float needle assembly — ensure the float moves freely and that the needle seats properly to avoid fuel overflow or starvation.
- **Tuning Guides:** If you notice rough idling or poor throttle response after installation, consult the detailed tuning guides available on our forums.
- **Full Tutorial:** For full guidance on servicing, click here for help on the forums.
📧 QUESTIONS? Reach out by email or join our community on the Technical Forums!












Torbjorn Wold-Hansen –
It’s a very nice kit that includes what you need. I especially like that it comes with new screws!
Martin –
When upsetting my GV125 this kit proved absolutely invaluable. Had I not purchased this we would still be struggling with rusty bolts and perished rubber seals. Thanks Marcel.
Martin –
Upsetting should read Upjetting…….. Maybe the two are interchangeable!😁
Rob –
100% genuine parts the guys no what’s hes on about 100% fast delivery would definitely recommend any one with a hyosung
Mike Edmunds –
Came to Spain very quickly. Excellent kit. Spain being a bit naughty with customs since Brexit, or it may be because I use a private post box! Not bad though as I had €100 of parts and they only charged €10.