Home

Help

Testimonials

New Arrivals

View Cart

Install Tips

Categories

Bestsellers

1. Rexpeed Dual Gauge Pillar Pod - EVO X / Ralliart
2. Autometer 52mm Gauge Pod
3. Rexpeed Evo X LHD Carbon A Pillar Pod
4. Rexpeed Carbon Fiber Steering Wheel Dual Gauge Pod - EVO X
5. cp-e Gauge Pod - EVO X / Lancer Ralliart
6. ATi Triple Center Dash Gauge Pod 60mm - EVO X
7. Autometer Carbon Fiber 52mm Gauge Pod Cup
8. Rexpeed Carbon Fiber Steering Wheel Gauge Pod - EVO X
9. ATI 52/60mm Conversion Rings (Set of 3)
10. Rexpeed Carbon LHD Double Pillar Pod - Evo X/Lancer Ralliart

Testimonials

Amazing, thats all i have to say, amazing product, amazing shipping, amazing prices and just general service. this site is dedicated to evo enthusiasts and helped me out a great deal with my project viii. its now on the road thanks to lancershop.com! i owe you guys more than just the money i spent on my parts, you also have another loyal customer. :)

Vladimir

View All Testimonials

Write Your Own Testimonial

Wiseco Asymmetric Skirt Bore 87.00mm - Size +.080 - 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# K666M87A

Details

Price: $662.95

Purchase Product