WISECO - 40076M08500 - Piston Kit - 85.00 mm - Yamaha
The top end is where power is made and where cut corners come back to haunt you. For 85.00 mm / Yamaha engines, the WISECO 40076M08500 piston kit offers a rebuild-ready solution manufactured to exceed OEM tolerances. Forged 4-stroke piston is designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Dedicated forgings allow for optimized strength-to-weight ratio. Product Name: Piston Kit. Run it with quality rings and fresh gaskets, and the 40076M08500 gives you a bottom end rebuild that lasts.
Features
- Forged 4-stroke piston is designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength
- Dedicated forgings allow for optimized strength-to-weight ratio
- Ideal for multiple purpose riding
- Kit includes piston, wrist pin, rings and circlips
Specifications
- Product Name: Piston Kit
- Bore - Oversize: +0.50 mm
- Bore Size: 85.00 mm
- Displacement: 401 cc
- Compression Ratio: 10.5:1
- Engine Type: 4-Stroke
- Piston Diameter: 84.92 mm
- Piston Material: Forged 2618 Aluminum
- Model: Forged Series
- Skirt Coating: ArmorGlide®
- Stroke Length: 71.50 mm
- Riding Style: ATV
- Units: Kit
Frequently Asked Questions - WISECO - 40076M08500 - Piston Kit - 85.00 mm - Yamaha
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.
