Hi-Per Blue Piston Kit 6L80 6L90 2006-Up 5 Pistons (#4858)

Hi-Per Blue Piston Kit for 6L80 / 6L90

Fits 2006-up | Part Number: 4858

The Hi-Per Blue Piston Kit is designed to address common apply and sealing issues found in high-mileage or high-load 6L80 and 6L90 transmissions. Over time, factory pistons can warp, crack, or lose sealing efficiency, leading to clutch apply problems, pressure loss, and inconsistent shift quality.

This kit includes five upgraded Hi-Per Blue pistons engineered from high-temperature, high-strength material that resists heat distortion and maintains consistent sealing under load. The improved material stability helps ensure proper clutch apply, better pressure control, and longer service life, especially in demanding driving conditions.

Ideal for stock rebuilds, towing applications, and performance upgrades, these pistons provide a reliable foundation when rebuilding or refreshing a 6L80 or 6L90 transmission.

Key Features

• Fits 2006-up GM 6L80 and 6L90 transmissions

• Includes (5) Hi-Per Blue upgraded pistons

• High-temperature resistant material for improved durability

• Helps restore proper clutch apply and sealing

• Reduces risk of pressure loss and uneven engagement

• Ideal for rebuilds, towing, and performance applications