Name: Jet Needle x2 [for Carb Diaphragm Slide] - Hyosung GT125 GT125R GV250 GT250R GV125
SKU: 13334HM8100
Availability: BackOrder

Jet Needle x2 [for Carb Diaphragm Slide] – Hyosung GT125 GT125R GV250 GT250R GV125

Estimated delivery dates: Apr 23, 2026 - Apr 24, 2026

Original price was: £20.00.Current price is: £9.99.

🛠️ ADJUSTABLE JET NEEDLE KIT (PAIR) | CUSTOM TUNING GROOVES

Unlock precise fuel tuning for your V-Twin. This aftermarket kit isn’t just a replacement; it features **two extra adjustment grooves** compared to stock OEM needles, allowing you to fine-tune your air-fuel mixture for peak performance.

✅ Performance Upgrade: 2 extra grooves for perfect lean/rich mixture adjustment.
🛠️ Complete Kit: Includes needles, springs, E-rings, guides, and spring seats (2 of each).
⚙️ Restores Response: Essential for a smooth power band & consistent fuel delivery.
📦 Sold as Pair: You receive a full set for both carbs on your twin-cylinder bike.

⚠️ DIAPHRAGM NOTE: The black rubber throttle slide diaphragm (the main moving part) is NOT included in this kit. Tap here if you need the Diaphragm Slides.

Description

When the throttle slides wear out, the jet needle often needs replacement too. Our aftermarket jet needle kit goes beyond a standard maintenance part; it’s a performance upgrade. The added adjustment grooves empower you, the owner, to adjust your fuel mixture precisely—whether compensating for airflow upgrades (like our DNA/BMC filters) or correcting a stock rich/lean setting. This is essential for life on the road and getting the most from your Hyosung.

💎 Precision Tuning, Better Performance

Use the included E-ring and extra grooves to dial in your mixture for better starts and a punchier mid-range.

2 Extra Grooves Allows for precise fine-tuning of fuel mixture.	Complete Kit Springs, guides, seats, E-rings included (x2).
Fixes Hesitation Ensures smooth transition through the rev range.	OEM Reference Direct replacement for 13334HM8100.

📜 Confirmed Fitment Guide

✅ FITS: GT125, GT125R, GT250, GT250R, GV125, GV250.
📅 YEARS: All Carburettor-equipped models (GV125 up to 2017).
📦 NOTE: You will receive a pair (2 pieces) for your V-Twin engine.

💡 RECOMMENDED PAIRING:
A fresh needle deserves a fresh home. Pair this with our Carburettor Diaphragm Slides to guarantee a perfect vacuum seal and ultimate performance. View Carburettor Spares here.

🔧 Install Tips

Start in the Middle: If unsure which groove to use, start with the E-ring in the middle position (3rd groove down).
Mixture Reading: Check your spark plugs after a run. A dark brown colour indicates perfect tuning. Lowest groove = richest setting.
Professional Help: If in doubt about tuning or installation, have a qualified mechanic perform the fitment.
Guide: View the full HyoRiders Tutorial Guides here.

📧 FITMENT QUESTIONS? Email us with your bike details. For tuning advice and community opinions, visit the HyoRiders Forums.