WISECO - K1642 - Piston Kit - +0.020” - Evolution Big Twin 1340 cc
A piston that fits loose burns oil and loses compression. One that fits tight seizes under heat. The WISECO K1642 is built for your +0.020” / Evolution Big Twin 1340 cc engine with the kind of precise dimensional control that sits exactly where it should — delivering clean combustion sealing and smooth cylinder wall contact from the first fire-up. Forged from high-silicon aluminum alloy for maximum strength and dependability. Kit Includes pistons, rings, retainer clips and chrome piston pins. Displacement: 1340 cc. Every serious rebuild deserves components engineered to this standard, and the K1642 delivers it.
Features
- Forged from high-silicon aluminum alloy for maximum strength and dependability
- Kit Includes pistons, rings, retainer clips and chrome piston pins
- Includes X-Ring package (0.062" top ring, 0.062" compression ring, and 0.158" oil ring)
- Pistons are made in the USA
Specifications
- Displacement: 1340 cc
- Stroke Length: 4-1/4"
- Type: Top End
- Units: Kit
- Bore - Oversize: +0,020"
- Bore - Oversize: +0.020"
- Engine Type: 4-Stroke
- Piston Head Shape: Flat Top -1.5 cc
- Piston Material: Forged 2618 Aluminum
- Color/Finish: Aluminum
- Riding Style: Street
- Bore Size: 3.518"
- Skirt Coating: Non-Coated
- Compression Ratio: 8.5:1
- Piston Diameter: 3.5155"
Frequently Asked Questions - WISECO - K1642 - Piston Kit - +0.020” - Evolution Big Twin 1340 cc
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.
