Vertex Replica Piston Kit
1012-9564 (MFG #: 22915B)
$357.52
Sale price
$357.52
Regular price
$397.23
Sale
-9%
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Vertex Replica Piston Kit for GAS GAS MC 125 Dirt Bike
Vertex Replica Piston Kit for GAS GAS MC 125 Dirt Bike
$357.52
Sale price
$357.52
Regular price
$397.23
Sale
-9%
SKU:1012-9564
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Description
FEATURES
- All piston skirts are coated with a hi-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
- Cast Replica piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston
- Forged Replica pistons are forged from 2618 aluminum for superior strength and durability
- Forged High Compression pistons improve power and torque across entire rpm range
- Forged Big Bore pistons increase engine's displacement, torque, and peak horsepower
- Forged Replica pistons are forged OE replacements
- All pistons are heat treated with a T-5 hardening and tempering cycle
- Replica pistons and all rings are OEM replacements
- Kits include piston, rings, wrist pin and circlips
- Two stroke replacement rings are sold individually (Example if your piston has two rings you will want to order two rings)
- Four-stroke piston rings sold as a set
Technical Specifications
- MFG. Part Number 22915B
Vehicle Information
GAS GAS MC 125 Dirt Bike (1995-2026)
The GASGAS MC 125, a high-performance 125cc two-stroke motocross motorcycle, has been a staple in its category from 1995 to 2026. Throughout its history, it has consistently featured a 124.8cc liquid-cooled, single-cylinder engine. A significant transformation occurred in 2019 with the acquisition of GasGas by Pierer Mobility. This led to the modern MC 125 (from 2021 onwards) sharing its platform with the KTM 125SX, offering a refined yet competitive package. While earlier models (1995-2020) had their own distinct characteristics, detailed information is less available. The 2021-2024 models maintained a carbureted engine. A major engine evolution arrived in 2025-2026 with the introduction of Electronic Fuel Injection (EFI) and a Keihin throttle body, replacing the carburetor for smoother power delivery and improved efficiency. These later models also feature updated chassis components and visual enhancements. The MC 125 is typically offered as a single model, with yearly updates rather than distinct trim levels. FAQ:
Q: How do I ensure I select the correct parts for my GASGAS MC 125?
A: To guarantee a perfect fit, please use the year and edition selector at the top of this page. This will filter parts specifically compatible with your motorcycle's model year.
Maintenance
| Component | Interval | Details |
| Gearbox Oil Change | Every 5 to 10 hours | 5 h for aggressive/race riding; 10 h for recreational riding. Refers to gearbox oil, as the 2-stroke engine is lubricated by fuel-oil premix. |
| Air Filter Service | Every 5 to 15 hours | Clean and inspect. 5 h for aggressive/race riding; 15 h for recreational riding. More frequent (2-3 h) in dusty/muddy conditions. |
| Top-End Inspection | Every 25 to 50 hours | 25-30 h for aggressive/race riding; 50 h for recreational riding. Includes inspection of piston, rings, and cylinder. |
| Bottom-End Inspection | Every 50 to 100 hours | 50 h for aggressive/race riding; 100 h for recreational riding. Includes inspection of crankshaft and bearings. |
| Power Valve Inspection | Every 15 to 30 hours | 15 h for aggressive/race riding; 30 h for recreational riding. Refers to exhaust power valve systems. |
Maintenance intervals may vary slightly by model year and usage conditions. Always consult your motorcycle's official owner's manual for precise information.