Description
Worn wheel bearings lead to instability, noise, and eventually, a safety issue. The factory KBC bearings often wear prematurely.
This Japan-made KOYO Bearing Kit is designed to be a superior, long-lasting upgrade that restores smoothness and reliability to your Hyosung’s drivetrain.
💎 Improved Reliability vs OEM
KOYO bearings are trusted worldwide for a reason—they are engineered for longevity and performance.
| Japan Made (Genuine) Trusted worldwide, superior to KBC stock units. |
C3 Rated Ideal internal clearance for high-speed use. |
| Longer Lifespan Typically lasts 2 to 4 times longer than stock bearings. |
Less Maintenance Ride further with confidence. |
📦 What’s In The Kit?
This is a complete, all-inclusive kit to do the job correctly:
- **2x** Front Wheel Bearings
- **2x** Rear Wheel Bearings
- **1x** Sprocket Bearing
- **1x** Sprocket Carrier Seal
📜 Confirmed Fitment (GT, GV650, ST7 Models Only):
(Models from 2003 to 2020 only)
| GT125, GT125R, GT250, GT250R | GT650, GT650S, GT650R & ST7 (GV700) |
❌ **This kit will NOT fit GV125 or GV250 Aquila models.**
*For Aquila models or other bikes (like the GD or RX125), please use the **contact form** to arrange a custom order.*
🔧 Installation Tips & Advice
Replacing bearings requires precision to ensure safety and longevity:
- Use Proper Tools: Use a proper bearing puller or press tool. Never hammer new bearings directly into place by hitting the inner race—this destroys them instantly.
- Clean Hubs: Clean the bearing housings thoroughly before installation.
- Grease the Seals: Apply a thin layer of high-quality grease to the outer races and seals during installation to prevent corrosion.
- Check Alignment: Always check sprocket alignment and chain tension after fitting new rear bearings.
📧 SALES ENQUIRY? Email us for direct product questions about this kit or custom orders.
For tutorials, manuals, and general community support, check out our forums.













![Front + Rear Wheel & Sprocket Hub Bearing Kit - Hyosung GV125 GV250 [2005-2017]](https://i0.wp.com/hyoriders.club/wp-content/uploads/2024/06/hyosung-gv125c-gv250-rear-front-wheel-bearings.jpg?fit=362%2C362&ssl=1)






Mick (verified owner) –
Nice shiny upgrade to the stock bearings especially after the road salt and conditions have helped my old one’s to bind slightly. They feel great and didn’t take much fitting very happy.