Cylinder Head Metal Engine Gasket – GT125R GT125 & GV125 Carby
Stop Compression Loss: A real seal for high-pressure performance. This solid metal gasket is the only way to properly seal the combustion chamber and oil galleries. Don’t risk a “lazy mechanic” RTV bodge—fix it right the first time to regain lost power.
- ✅ Construction: Steel for maximum heat durability.
- 🛠️ Purpose: Stops internal/external oil leaks and fixes misfires.
- ⚙️ Critical Part: Essential for any top-end rebuild or valve-shim service.
- 📦 What’s Included: 1x Metal Head Gasket (Single Cylinder).
Description
When your 125cc Hyosung starts losing power or “sweating” oil from the head-to-block join, the head gasket is usually the culprit. Unlike cheap paper or liquid alternatives, this metal gasket is designed to withstand the high compression and heat cycles of the air-cooled V-Twin motor. It is the definitive upgrade for anyone decarbonising pistons or performing a full valve-train refresh.
💎 Stop Compression Loss with a Metal Seal
Maintain your engine’s factory performance by ensuring a 100% airtight seal across the cylinder head.
| High Pressure Won’t blow out under load. |
OEM Reference Matches 11141HG5110. |
| Thermal Shield Resists high V-Twin heat. |
Precision Fit For 125cc Air-Cooled twins. |
📜 Confirmed Fitment Guide
✅ CRUISERS: GV125C / Aquila 125 (Carburettor Models 1999-2018).
❌ WILL NOT FIT: GV125-S EFI (Liquid Cooled), GV300-S, or any 250cc models.
Replacing the head gasket often means the top-end is apart. Now is the perfect time to replace your [Valve Stem Seals] to stop blue smoke on startup!
🔧 Install Tips
- Surface Prep: Use a plastic scraper to remove 100% of old gasket residue and carbon. Surfaces must be “mirror clean” and dry.
- No Sealer: Do not use RTV or copper spray. This metal gasket is designed to be installed dry for a factory-standard seal.
- Torque Sequence: Always use a torque wrench and follow the cross-pattern tightening sequence to prevent warping the head.
📧 FITMENT QUESTIONS? Email us with your bike details. For technical help or community opinions, visit the HyoRiders Forums.
Additional information
| Weight | 0.5 kg |
|---|---|
| Dimensions | 20 × 20 × 2 cm |
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GARAGE PICKS // ADD TO BUILD
-
Oil Filter Service Kit & O-Rings – Hyosung GV125 GT125R GT125 GV250 GT250
£9.99 -
EGR Valve Blanking Plate / AiS Delete Block Off Kit – Various Hyosung Carb Models
£11.99 -
Cylinder Head Valve Cover Rubber Gasket – GT125 GV250 GT250 GV125C
£14.99 -
![Cylinder Head Cover Rubber Washer [x4] [Engine Valve Rocker Cam] :: Various Hyosung Models (125cc | 250cc | 650cc)](https://i0.wp.com/hyoriders.club/wp-content/uploads/2023/01/rubber-washer-hyosung-cylinder-head.jpg?fit=362%2C362&ssl=1)
Cylinder Head Cover Rubber Washer [x4] [Engine Valve Rocker Cam] – Various Hyosung Models 125 250 650
£15.99
EXPLORE // RELATED PRODUCTS
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Carb Rebuild Kit (Carburetor Repair Parts) – Hyosung GT125R GT250 GV125 GV250 GT125
£19.99 -
Engine Front Sprocket Washer Safety Lock – Hyosung GV125 GT250 GT125R RX125 GV250
£7.99 -
Heavy Duty Clutch Springs Set [x5] – Hyosung GV125 GT125 GT125R
£19.99 -
Upgrade Regulator Rectifier [Big Heatsink] – Hyosung GT/GV 125 250 Carb Models
£34.99
Independent Shop supplying ride enhancements and quality spares with fast dispatch. Need assistance? Access our workshop guides, manuals, tutorials or drop by the forums for troubleshooting help.
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