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Testimonials

I was looking to complete the last stage of Evo mods I had planned for this year, so after comparing prices from other sites, I landed on Lancer Shop because they seemed pretty consistently fair and knowledgeable.

After getting everything I needed, I went to go checkout and my credit card bombed - three times. It was disappointing for sure, and figured I'd have to wait a pretty long while before I could resubmit my order, and hopefully hadn't accidentally charged my card three times.

Thankfully, Janelle contacted me via e-mail, and was extremely patient and helpful getting my payment mess resolved. We switched up cards, tried again, and it went through perfectly. She deserves some serious kudos. I've dealt with service people before who either couldn't be bothered or caved under the pressure of a crazy customer screw-up, but she handled it quite well.

I will definitely be returning in the future for more accessories and parts!

Camdon

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Wiseco Asymmetric Skirt Bore 86.50mm - Size +.060 - CR 9.5 Piston Set - EVO 8/9

Product Description

Wiseco's new asymmetrical piston forging design for the Mitsubishi Lancer Evolution 8-9 maintains a larger skirt area on the heavily stressed major thrust side, while reducing friction with a smaller skirt area on the minor thrust side. The result is a high strength, lightweight piston that significantly reduces friction in your engine.

What is asymmetrical?

Asymmetrical, by definition, means "not symmetrical". The new asymmetrical forged pistons from Wiseco utilize two different sized piston skirts, so are identified as an "asymmetrical" piston design.

Why are asymmetrical pistons better?

FACT: The two skirts of a piston do not experience the same amount of mechanical loading. During the firing cycle, the load exerted on one piston skirt, referred to as the "major thrust side," can be up to 10 times higher than the load experienced by the opposing skirt, referred to as the "minor thrust side." The disparity in skirt loading can vary in magnitude depending on key variables including the engine's stroke, rod length, and peak cylinder pressure.

Wiseco's asymmetrical pistons are designed to specifically handle the dissimilar mechanical loads experienced by both piston skirts. The resulting piston design features a large skirt area on the heavily loaded "major thrust side" and a small skirt area on the less loaded "minor thrust side". Overall, the piston design is stronger, yet lighter than previous designs.

The Wiseco asymmetrical Evo "shelf" pistons are available in a variety of compression ratios, bore diameters to suit a broad range of combinations.

Part# K666M865AP

Details

Price: $662.95

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