ATHENA - S4C05400016A - Piston Kit - 53.94 mm - Gas Gas EC125 | Yamaha YZ125
The ATHENA S4C05400016A Piston Kit is a 53.94 mm bore 4032 aluminum alloy set engineered for 1997-2021 Gas Gas EC125 and Yamaha YZ125 two-stroke engines, built with high silicon content for mechanical and thermal resistance and validated through dynamometer and track testing under progressive stress loads.
Features
- High resistance to mechanical and thermal stresses
- Made from special high-performance aluminum alloy with high silicon content that guarantee the same reliability of the OE piston
- Has been tested on engine dynamometer benches under progressive stress load, and thereafter on track to validate it performance even in the most extreme conditions
Specs
- Compression Ratio: Stock
- Engine Type: 2-Stroke
- Units: Kit
- Displacement: 125 cc
- Piston Head Shape: Flat Top
- Piston Material: 4032 Aluminum Alloy
- Riding Style: Off-Road
- Bore Size: 53.94 mm
- Style: Cast
- Product Name: Piston Kit
- Type: A
Frequently Asked Questions - ATHENA - S4C05400016A - Piston Kit - 53.94 mm - Gas Gas EC125 | Yamaha YZ125
How do I know if this part fits my vehicle?
Check the fitment information listed on this page against your exact year, make, model, and (where applicable) trim, engine size, or configuration. If your exact vehicle isn't listed, or you're not sure, use the product chat on this page or contact our support team before ordering - we're glad to help confirm fitment.
What does it mean if a product is listed as universal fit?
Universal fit means the product is designed to work across a range of vehicles, not that it's guaranteed to fit every one. Compare the listed measurements, mounting requirements, and connector or hardware specs against your specific vehicle before ordering, since some installations may need additional hardware or minor fabrication.
Where can I find installation instructions for this product?
General installation notes are provided above where available. For detailed step-by-step instructions, refer to the manufacturer's documentation included with the product, or use the product chat on this page for questions about difficulty, required tools, or whether professional installation is recommended.
What if I have more questions about this product?
Use the product chat on this page for fitment, specs, installation, and compatibility questions, or contact our support team directly for help before you order.
