What is the compression height for these pistons?

The compression height for this Wiseco piston set is 28.70 mm. This measurement is important for ensuring proper piston-to-head clearance and valve timing.

What is the purpose of the ArmorGlide skirt coating?

The ArmorGlide skirt coating on these pistons helps reduce friction between the piston skirt and cylinder wall. This leads to quieter operation, reduced wear, and improved resistance to seizure.

Are these pistons suitable for a street-driven car?

These pistons are designed and built for heavy to severe duty race applications. While they can be used in a street car, they are intended for high-performance builds and may require supporting modifications for optimal performance and reliability.

Wiseco 4G63 7-Bolt 10.5:1 Forged Piston Set K676M865AP

Name: Wiseco Mitsubishi 4G63 7-Bolt 1.9cc Dome 10.5:1 - Set of 4
Brand: Wiseco
SKU: wiseco-wiseco-mitsubishi-4g63-7-bolt-1-9cc-dome-10-5-1-set-of-4-t14-566015
Price: 806.99 USD
Availability: BackOrder

Wiseco Mitsubishi 4G63 7-Bolt 1.9cc Dome 10.5:1 - Set of 4

$806.99

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Wiseco 4G63 7-Bolt 1.9cc Dome 10.5:1 - Set of 4 Piston Set. Built for severe duty race builds.

Key Features

Fits Mitsubishi 4G63 7-bolt engines.
Forged from 2618 aluminum in the USA for improved tensile strength.
1.9cc dome volume and 10.5:1 compression ratio.
86.50 mm bore size.
Features precision ring grooves and additional ring seal improvements.
Includes ArmorGlide skirt coating for reduced friction and seizure resistance.

This piston set is designed for Mitsubishi 4G63 7-bolt engines. Please verify compatibility with your specific engine configuration.

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Product Details

Forged from 2618 aluminum right here in the USA, these Wiseco pistons are built for serious performance in your Mitsubishi 4G63 7-bolt engine. The 1.9cc dome and 10.5:1 compression ratio are specifically chosen to work well with many popular performance cylinder heads for this engine, offering a solid bump in power over stock without being overly aggressive for pump gas in many setups. Wiseco engineers these pistons for heavy to severe duty race applications, meaning they're designed to handle the stress of high-performance builds.

You'll find a lot of attention to detail here. The precision ring grooves are designed for improved sealing, and Wiseco has added features to enhance ring seal even further, which is critical for maintaining compression and preventing blow-by under high boost. They also include forced pin oiling to ensure the wrist pin stays well-lubricated, a common failure point in lesser pistons. Plus, the ArmorGlide skirt coating helps reduce friction and noise, and it's resistant to seizure, which is a nice benefit for longevity and smoother operation.

This set includes four pistons, each with a fully machined crown for accuracy. Keep in mind these are not CARB approved and cannot be shipped to California. If you're building a high-performance 4G63, these Wiseco pistons are a well-built foundation for your engine.