Cognito

The stock bottom overload spring is very harsh in spring rate, this mini pack is a progressive overload that will ride better and provide 1/2” to 1-1/4” of rear lift depending on how many spacer...

The Cognito 1-inch Block and U-Bolt Kit includes 1-inch tall powder coated semi-gloss black cast steel blocks and heavy-duty zinc plated U-bolts. Made in the USA.

The stock bottom overload spring is very harsh in spring rate, this mini pack is a progressive overload that will ride better and provide 1-3 inches of rear lift if one or both of the spacer blocks...

2025 GM 1500 trucks are coming with a rounded leaf spring top plate and u-bolts, this allows anyone with a lift or leveling kit that has a block and u-bolt kit to convert back to the flat top plate...