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Wiseco K594M8425AP Piston Kit 84.25mm ArmorPlating Skirt Coating

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

K594M8425AP
12 reviews
Sale Price

$831.99

Estimated ship date Sunday, November 22

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Product Details

The Wiseco K594M8425AP is a forged piston kit featuring an 84.25mm bore diameter and Wiseco's proprietary ArmorPlating (AP) skirt coating. Wiseco pistons are manufactured from 2618 aircraft-grade aluminum alloy using a cold-forged process, resulting in a piston that is significantly stronger and more durable than cast alternatives — making them a popular choice for performance engine builds and high-output applications.

The ArmorPlating skirt coating reduces friction between the piston skirt and cylinder wall, improving ring seal, reducing wear, and allowing for tighter piston-to-wall clearances. This helps maintain consistent oil film thickness and extends engine longevity under demanding operating conditions.

Key Features:

  • 84.25mm bore diameter for precise fitment
  • ArmorPlating (AP) skirt coating for reduced friction and improved wear resistance
  • Cold-forged 2618 aircraft-grade aluminum alloy construction
  • Superior strength-to-weight ratio versus cast pistons
  • Engineered for consistent ring seal and improved combustion efficiency
  • Manufactured to tight tolerances for OEM-quality or better fitment

Wiseco has been a trusted name in performance pistons for powersports, motorsports, and automotive applications for decades. Each piston kit is precision-machined and inspected to meet strict quality standards.

Wow, what a good company to deal with! I ordered my Brake Motive 0100 pressure brake bleeder and 2 days later it was here! I can't wait to test it out. The only thing they could improve on is having the ability to search for parts based on year, make and model of the vehicle. The website requires that I find component part numbers elsewhere and input them in, a pretty cumbersome and difficult process. Thanks again!

Overall easy and reasonable.. More coupons would be nice:)

good

Very easy so far.

So far i am happy with your service.

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I feel it was a smooth transaction

best price around and quick order placement

Quick and easy!

Easy to purchase online.Would buy from again. Fast shipping.

They had the best price on the internet! Fast shipping and repsonse.

I couldn't find these ARP studs anywhere else for this price! $20 less than ANYWHERE! Definitely coming back to shop at Autoplicity.

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