VHM Gold Performance Cylinder Head for KTM 125 SX, Husqvarna TC 125 & GASGAS MC 125
High-performance VHM cylinder head with interchangeable combustion chamber inserts, engineered to improve power delivery, cooling efficiency, and detonation resistance on 125cc 2-stroke race bikes. Built from high-quality alloy and finished in VHM’s signature gold color.
$294.99
Only 1 Left!
Product Description
The VHM AA33156 Gold Performance Cylinder Head is developed for KTM 125 SX, Husqvarna TC 125, and GASGAS MC 125 2-stroke motorcycles, providing a race-focused upgrade with improved thermal management and interchangeable combustion chamber technology.
Manufactured from a high-quality aluminum alloy, the cylinder head is designed to support strong, consistent engine performance throughout demanding motocross and off-road use. Its improved internal water duct enhances heat transfer, helping control engine temperature during extended high-load riding.
The interchangeable combustion chamber system allows riders and engine tuners to change the insert according to piston configuration, fuel, track conditions, elevation, and desired engine characteristics. This makes it possible to fine-tune the engine without replacing the complete cylinder head.
For engines using the OEM piston, VHM specifies the AE32257-E standard insert. For engines equipped with the VHM 12° piston APKT12511725, the recommended standard insert is AE32257-026.
The head uses O-ring sealing for a precise and reliable cylinder head interface and includes a factory-mounted M6x8 vent screw with BD36006 copper washer.
Designed for increased engine power, improved heat transfer, and better resistance to detonation, the AA33156 is an ideal upgrade for riders looking for greater tuning flexibility and dependable race performance.
Combustion chamber inserts are not included and must be ordered separately.
Key Features
- Interchangeable combustion chamber system allows engine characteristics to be tuned for different fuels, tracks, elevations, and piston configurations
- Performance-oriented design helps increase engine power and maintain consistent output throughout demanding race conditions
- Improved internal water duct enhances heat transfer and supports more stable operating temperatures
- High-quality alloy construction with O-ring sealing provides durability and improved resistance to detonation
- Includes a factory-mounted M6x8 vent screw and BD36006 copper sealing washer
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | VHM |
| Part Number / SKU | AA33156 |
| Product Type | Performance Cylinder Head |
| Engine Type | 2-Stroke |
| Engine Class | 125cc |
| Material | High-Quality Aluminum Alloy |
| Color / Finish | Gold |
| Combustion Chamber Design | Exchangeable Insert |
| Sealing System | O-Rings |
| Cooling Feature | Improved Internal Water Duct |
| Standard Insert for OEM Piston | VHM AE32257-E |
| Standard Insert for VHM 12° Piston | VHM AE32257-026 |
| Compatible VHM 12° Piston | APKT12511725 |
| Vent Screw | M6x8, Included and Pre-Installed |
| Vent Screw Washer | BD36006 Copper Washer, Included and Pre-Installed |
| Insert Included | No – Sold Separately |