Sierra 2500 HD

We have bundled everything you need in a lift kit for your Silverado/Sierra 2500/3500 2WD/4WD with high quality Cognito components. There is no guesswork. Cognito components are engineered, manufactured and assembled in the USA.The Cognito Non-Torsion...

The Cognito Comfort Ride Leaf Spring will have more compression travel before the bottom overload activates, meanwhile maintaining an excellent ride quality via being made from high quality spring steel.Features22% Improvement in ride qualityProvides...

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...

We have bundled everything you need in a leveling kit for your GM 2500/3500 with high quality Cognito components. There is no guesswork, and you SAVE with the bundled price.The Cognito Ball Joint SM Series Upper Control Arms add style, function, and...

Boost your transmission a performance with this PPE Bar and Plate Transmission Fluid Cooler. Bigger effective cooling area and thicker core enables PPE cooler to draw 200% more heat from your transmission fluid compared to the factory cooler. We observed...

The Allison transmission has a reputation for performance and longevity. Now that it is available as the 10L1000, the reputation continues.Get the best protection and performance out of your 10L1000 by upgrading to the PPE Heavy-Duty Cast Aluminum Deep...

The Allison transmission has a reputation for performance and longevity. Now that it is available as the 10L1000, the reputation continues.Get the best protection and performance out of your 10L1000 by upgrading to the PPE Heavy-Duty Cast Aluminum Deep...

The Allison transmission has a reputation for performance and longevity. Now that it is available as the 10L1000, the reputation continues.Get the best protection and performance out of your 10L1000 by upgrading to the PPE Heavy-Duty Cast Aluminum Deep...

Specially engineered to minimize friction and maximize lubrication. Keep your GM rear differential running cool and clean with an upgraded cover from PPE. Made from high-quality cast A356-T6 aluminum for strength and optimum heat dissipation.Increased...

Specially engineered to minimize friction and maximize lubrication. Keep your GM rear differential running cool and clean with an upgraded cover from PPE. Made from high-quality cast A356-T6 aluminum for strength and optimum heat dissipation.Increased...

Help keep your GM front differential running cool and clean with an upgraded differential cover from PPE. With the largest set of cast cooling fins in the industry, found both inside as well as outside the pan, PPE's differential covers offer fluid...

Help keep your GM front differential running cool and clean with an upgraded differential cover from PPE. With the largest set of cast cooling fins in the industry, found both inside as well as outside the pan, PPE's differential covers offer fluid...