Sierra 2500

Pitman and Idler arms have been an inherent wear problem within the steering systems of Chevy and GMC trucks and SUVs for decades.The Cognito PISK (Pitman and Idler Arm Support Kit) replace the problem components that plague factory and aftermarket...

For the extremist who wants to take their truck to the next level, this dual bolt-on Cat back system is for you. This system exists behind the rear tires at an aggressive angle with a powerful exhaust tone. You will gain bold street looks with powerful...

The aluminum bodied Performance Series 2.0 Reservoir smooth body shock delivers FOX's industry leading and race dominating performance in an affordable, hassle-free bolt on package. Its heat reducing design includes a metal impacted clear anodized...

The aluminum bodied Performance Series 2.0 Reservoir smooth body shock delivers FOX's industry leading and race dominating performance in an affordable, hassle-free bolt on package. Its heat reducing design includes a metal impacted clear anodized...

Factory Mounting Locations:These headers retain your stock catalytic converters and are a direct bolt-on installation which requires no cutting or drilling to provide a hassle-free installation.Formed Collectors:4-to-1 formed collectors decrease...

The Cognito Alloy Series Tie Rod kit is a Heavy-Duty stock replacement upgrade where the inner joint incorporates an oversized alloy ball and socket. Sold as a Pair.FeaturesAlloy Series Tie Rod Kit Heavy duty stock replacement upgrade. significantly...

The aluminum bodied Performance Series 2.0 Reservoir smooth body shock delivers FOX's industry leading and race dominating performance in an affordable, hassle-free bolt on package. Its heat reducing design includes a metal impacted clear anodized...

Cognito CV Front Driveline Kit For 4-6 Inch Lift-Duramax/ 4-12 Inch Lift-Gas On 01-16 Silverado/Sierra 2500/3500/ 7-12 Inch Lift On 99-06 Silverado/Sierra 1500.This direct bolt in driveline features a 1310 series double cardan CV and it is made in the...

Rough Country's 3in No-Cut Kit offers easy installation and aggressive good looks at an incredible value. Take your truck to new heights with this excellent option for 2500, 2500HD, 2500 Suburban and Yukon XL models. This kit features a set of durable,...

Zone Offroad Heavy-Duty Upper Control Arm Kits. The new upper control arms provided in these kits are direct replacements for the factory arms. Made from fully weld 1/8" steel plate construction as well as CNC machined ball joint and bushing mounts,...

Cognito CV Front Driveline Kit For 7-9 Inch 10-12 Inch Lifts On 01-16 Silverado/Sierra 2500HD/3500HD Duramax. This direct bolt in driveline features a 1310 series double cardan CV and it is made in the USA. This kit includes the Cognito Allison...

Rough Country's 3in No-Cut Kit offers easy installation and aggressive good looks at an incredible value. Take your truck to new heights with this excellent option for 2500, 2500HD, 2500 Suburban and Yukon XL models. This kit features a set of durable,...