WISECO - K2799 - Piston Kit - 4.125” Bore - 117 CI - 107” M8
Engine rebuilds are only as good as the parts that go back in, and when it comes to the piston — the component under more sustained thermal and mechanical stress than anything else in the top end — there is no room for compromise. The WISECO K2799 is a precision-engineered piston kit for 4.125” Bore / 117 CI / 107” M8 engines, built to hold dimensional tolerances across thousands of heat cycles. Features ArmorX™ piston coating for superior protection in extreme conditions and reduced wear, giving you the kind of fit-from-day-one accuracy that prevents premature wear on the cylinder wall, wrist pin, and rings. ArmorFit™ skirt coating auto-adjusts to the cylinder wall so there’s no need to measure clearance; provides smooth, quiet, trouble-free operation. Skirt Coating: ArmorFit™. Whether you are overboring for more displacement or simply replacing what age and hours have worn out, the K2799 gives you a forged foundation you can trust.
Features
- Features ArmorX™ piston coating for superior protection in extreme conditions and reduced wear
- ArmorFit™ skirt coating auto-adjusts to the cylinder wall so there’s no need to measure clearance; provides smooth, quiet, trouble-free operation
- Dome design for improved flame travel to maximize air/ fuel burn efficiency
- High compression (11:1) for added power
- Superfinish piston pin reduces friction and improves scuff resistance
- Enhanced pin oiling for improved lubrication and reduced friction
- Augmented ring land details improve ring seal and function
- Dedicated rings for precise fit, improved compression and oil control
- Kit includes two pistons, rings, piston pins and circlips
- Made in the USA
- Fits OEM and Screamin’ Eagle cylinder heads.
Specifications
- Skirt Coating: ArmorFit™
- Bore Size: 4.125"
- Compression Ratio: 11.0:1
- Units: Kit
- Model: Black Edition™
- Riding Style: Street
- Displacement: 117 CI
- Piston Diameter: 4.122"
- Product Name: Piston Kit
- Piston Material: Forged 2618 Aluminum
- Stroke Length: 4.375"
Frequently Asked Questions - WISECO - K2799 - Piston Kit - 4.125” Bore - 117 CI - 107” M8
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.
