2015-2018 GM Colorado 1" Rear Block Kit (66-3510)The ReadyLIFT 1 inch Rear Block Kit for Chevrolet Colorado and GMC Canyon trucks is an economical way to increase the rear ride height of your vehicle. These blocks are manufactured from cast iron to ensure maximum strength and durability, mimicking the design of factory lift blocks. By inserting these between the leaf spring and the axle, you gain an additional inch of lift while maintaining the factory ride quality and load carrying capacity, making
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