Front Engine Sprocket Nut – Hyosung GV125-S EFi [Bobber 125 S]
Secure your 125cc power transfer. This essential replacement nut firmly locks your front drive sprocket in place to keep your final drive setup safe and solid during rides on everyday roads.
- Quality // Genuine Hyosung replacement part to guarantee exact thread matching and proper material strength.
- Finish // Supplied with a protective zinc coating to help stop rust from building up around the gearbox area.
- Utility // Holds the sprocket tight on the engine shaft to ensure safe and steady drive power reaches your back wheel.
- Hardware // Includes 1x replacement sprocket nut. Highly recommended whenever you are putting on a fresh chain kit.
Description
The front sprocket nut is an easy part to forget about, but it is a critical fastener for keeping the final drive on your GV125-S safe. Whenever you swap out a worn chain and sprocket set, using fresh matching hardware is the best way to keep everything tight. This factory-spec nut is built to handle the tightening force needed for your 125cc motor, making it a smart way to stop the main drive gears from working loose on everyday roads.
💎 GEARBOX SHAFT HARDWARE SPECIFICATIONS
| High-Grade SteelTough thread structure made to handle standard workshop torque settings. | Direct Factory MatchGenuine original part engineered to spin straight onto the main drive shaft. |
| Drivetrain SafetyLocks the front chain sprocket firmly in line to prevent side-to-side play. | Zinc Anti-Rust LayerCoated to stop corrosion from locking the nut or ruining the engine threads. |
📜 Confirmed Fitment Guide
Modern Liquid-Cooled 125cc Group: Direct drop-in fitment verified for the fuel-injected bobber variants detailed below.
- Hyosung GV125-S Aquila Bobber EFi: Fits all standard models from 2019 to present.
- Alternative Engine Capacities & Old Models: This nut is strictly for the modern GV125-S engine casing. It will not fit classic air-cooled 125cc lines (like GV125C or GT125), nor will it fit any 250cc or 300cc models.
🔧 Install Tips
- Use a Torque Wrench: Never guess how tight your sprocket nut is. Use a proper torque wrench and tighten the nut to the settings listed in your workshop manual (usually 55 to 65Nm).
- Fold the Washer Tab: Once the nut is fully tightened down, use a flat screwdriver and a small mallet to carefully bend the edge of your new locking washer flat against one of the straight sides of the nut.
- Clean the Threads First: Wipe away old sticky chain grease and road grit from the gearbox shaft threads before putting the new hardware on. This makes sure your wrench readings are accurate. For extra peace of mind, you can add a small dab of blue medium-strength thread-locking glue to the shaft.
- Manufacturer Reference Cross-Match: Directly replaces original production factory record number 09140-16017JS.
Additional information
| Weight | 0.5 kg |
|---|---|
| Dimensions | 10 × 10 × 3 cm |
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GARAGE PICKS // ADD TO BUILD
-
Ignition Coil Pack [x1] – Hyosung GV125-S EFi Bobber 125 S
£44.99 -
NGK LASER Iridium Spark Plugs x2 – Hyosung GV125-S Bobber EFi
£30.99 -
Upgrade Clutch Springs & Plates Friction Drive Overhaul Kit – Hyosung GV125-S EFi Bobber 125 S
£74.99 -
Air Filter (Cleaner Element) – Hyosung GV125-S EFi [Bobber 125 S]
£24.99
EXPLORE // RELATED PRODUCTS
![Engine Front Sprocket Washer [Safety Lock] - Hyosung GV125S Bobber EFi](https://i0.wp.com/hyoriders.club/wp-content/uploads/2020/04/xgv125spkwshr.jpg?fit=362%2C362&ssl=1)
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