Cognito 99-16 Chevy/GMC Silverado/Sierra 2500/3500 HD CV Front Driveline Kit for 4-6in Lift

When you're lifting your 1999-2016 Chevy Silverado or GMC Sierra 2500/3500 HD, especially with a 4-inch lift or more, you'll likely need to address the front driveline. This kit from Cognito gives you everything you need to replace your stock unit with a more robust setup designed to handle the increased angles. What you get in this box is a complete, direct bolt-in CV front driveline, featuring a 1310 series double cardan CV joint at the transmission end and a 1330 to 3R combo u-joint at the differential. It also includes the Cognito Allison Transmission Bracket, making installation much more straightforward, especially on trucks equipped with that transmission.

This driveline is built in the USA and is designed to increase suspension travel, which is crucial when you've modified your truck's ride height. The double cardan CV joint is key here; it helps to minimize vibrations and noise that can occur when the driveline operates at steeper angles, which is common after a lift. The kit is engineered to fit a range of lift heights, from 4-6 inches up to 12 inches depending on your truck's configuration and engine type (Duramax or gas). For trucks with a six-speed Allison transmission, you'll also need part number 110-90278, the shift linkage relocation bracket, to ensure everything lines up correctly.

This is a well-built kit that aims to make the transition to a lifted truck smoother. It’s a popular choice for those looking to ensure their drivetrain operates correctly and reliably after installing a lift kit. The direct bolt-in nature and the included transmission bracket simplify what can often be a complex installation, making it a solid option for DIYers who are comfortable with basic drivetrain work.