Timbren 2009 Ford F-150 Platinum 4WD SES Spacer KitPopular Timbren SES kits were designed to work on pickup trucks with a standard ride height. But installing a lift kit on your pickup truck will increase the distance between the frame and the rear axle and, therefore, compromise the effectiveness of the Timbren SES helper springs. In other words, your lifted truck is still going to squat even after a Timbren SES rear kit has been installed. That's where an approved Timbren spacer kit can fill the