Transmission Specialties 4L80E High Performance 300M Steel Input Shaft for GM 1991-Up

Upgrade your transmission with this 4L80E High Performance 300M Steel Input Shaft for GM 1991-Up. Engineered from premium 300M steel, this high-performance input shaft is vastly stronger than the factory original and is built to handle the extreme loads of high-horsepower builds without twisting or breaking.

Whether you’re pushing big power on the street, hitting the trails, or towing heavy loads, this shaft ensures dependable power transfer and long-lasting durability. It installs as a 100% direct replacement in any GM 4L80E or 4L85E transmission from 1991-up, requiring no special tools or modifications.

This part is distributed by Stellar Automotive Group.

• Premium 300M steel construction delivers maximum strength and durability for high-horsepower applications
• Significantly stronger than OEM shafts – the must-have upgrade for pro-street, off-road, racing, and heavy towing
• Direct drop-in replacement fits GM 4L80E and 4L85E transmissions 1991 and newer with no modifications required
• Advanced design provides optimum stress distribution and eliminates common failure points under extreme torque
• Precision-engineered for reliable performance in demanding GM truck, SUV, and van builds