ATHENA - S4F06640018C - Piston Kit - 66.36 mm - Gas Gas | Husqvarna | KTM
The ATHENA S4F06640018C Piston Kit is a forged 4032 aluminum alloy kit for 2005-2025 Gas Gas, Husqvarna, and KTM 249cc 2-stroke models (including Factory Edition, Freeride 250 R, and XC-W TPI), sized for the 66.36 mm bore with optimized piston rings for reduced friction, high mechanical and thermal stress resistance, and validated through dynamometer and track testing.
Features
- High resistance to mechanical and thermal stresses
- 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
- Equipped with piston rings that guarantee less friction with the OE cylinder producing a higher performance
- Made by reverse extrusion
- For OE cylinder.
Specs
- Displacement: 249 cc
- Riding Style: Adventure Touring / Dual-Sport
- Riding Style: Street
- Compression Ratio: Stock
- Units: Kit
- Style: Forged Race
- Type: C
- Bore Size: 66.36 mm
- Product Name: Piston Kit
- Piston Material: 4032 Aluminum Alloy
- Piston Head Shape: Domed
- Riding Style: Off-Road
- Engine Type: 2-Stroke
Frequently Asked Questions - ATHENA - S4F06640018C - Piston Kit - 66.36 mm - Gas Gas | Husqvarna | KTM
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.
