Timbren SPCRGMRCK15S SES Spacer Kit – Upgraded Suspension for GMC Sierra 1500 The Timbren SPCRGMRCK15S SES Spacer Kit is designed to upgrade the suspension of your GMC Sierra 1500. It is specifically designed for use with the Timbren Helper Spring Kit GMRCK15S. This spacer kit includes two 1″ rubber spacers and two 1/2″ rubber spacers, as well as all necessary hardware for installation. Product Features: Upgraded suspension for the GMC Sierra 1500 Designed for use with the Timbren Helper Spring Kit GMRCK15S Includes two 1″ rubber spacers Includes two 1/2″ rubber spacers Comes with all necessary hardware for installation Features: Product Type: SES Spacer Kit Compatibility: GMC Sierra 1500 Spacer Sizes: Two 1″ rubber spacers, Two 1/2″ rubber spacers Includes: All necessary hardware for installation