Name: Front Engine Sprocket Nut - Hyosung GD250R GD250N
SKU: 09140-16017-GT125
Availability: InStock

Front Engine Sprocket Nut – Hyosung GD250R GD250N

Estimated delivery dates: Mar 19, 2026 - Mar 20, 2026

£14.99

💎 FRONT ENGINE SPROCKET NUT GD250 | SECURE YOUR DRIVE

Performance Win: Critical drivetrain security for your GD250. Whether you are upgrading your chain or performing routine maintenance, this high-tensile sprocket nut ensures your front drive remains locked and safe. A direct-fit aftermarket match designed for the high-revving GD series.

✅ Function: Secures the front drive sprocket to the output shaft.
🛠️ Maintenance: Essential for chain/sprocket swaps or top-end rebuilds.
⚙️ Quality: Zinc-coated for corrosion resistance (Yellow or Silver).
📦 What’s Included: 1x Front Engine Sprocket Nut.

⚠️ SAFETY ALERT: Reusing a bent locking washer is dangerous! The washer teeth wear down and won’t hold the nut. Always pair this nut with a new safety washer to prevent the sprocket from flying off mid-ride.

Description

For a performance bike like the GD250R or GD250N Exiv, the front sprocket nut is the only thing keeping your engine’s power connected to your rear wheel. Over time, these nuts can suffer from vibration or improper torquing. Replacing a tired or rounded nut is essential for maintaining the integrity of your output shaft threads and ensuring your life on the road remains uninterrupted by mechanical failure.

💎 Secure Your Drivetrain with Quality Hardware

A robust aftermarket solution that matches OEM specifications for fitment and strength.

Direct Fit No grinding or bodging.	OEM Reference Matches 09140-16017.
Zinc Coated Resists road salt & rust.	High Tensile Built for 250cc EFI power.

📜 Confirmed Fitment Guide

✅ FITS: Hyosung GD250R (All years 2015-2020).
✅ FITS: Hyosung GD250N Exiv (All years 2015-2020).
❌ WILL NOT FIT: GT650, GV650,

💡 CRITICAL PAIRING:
Hyosung strongly advises using a new locking washer whenever the nut is replaced. View the GD250 Safety Locking Washer here.

🔧 Install Tips & Safety

Torque to Spec: Use a torque wrench to ensure the nut is seated correctly on the output shaft.
Lock it Down: After torquing, bend the edge of the new locking washer over the flat of the nut to prevent it from spinning loose.
Thread Locker: For added peace of mind, apply a drop of medium-strength thread locker to the shaft threads before installation.

📧 FITMENT QUESTIONS? Email us before you buy. For technical support or community torque specs, visit the HyoRiders Forums.