Call: 661-728-9600 Monday-Friday, 8am-pm Pacific Time ; FAQs. Frequently asked questions and answers from our Techs ; DIMENSION SHEETS.Bolt On traction system. When adjusting your CalTracs, be sure to have the suspension in a compressed state. CalTracs traction bars traction enhancement system. Calvert Racing - 42156 10th Street West - Suite V - Lancaster, CA 935364 Phone: 1-800-607-2266 Installing the CALTRACS is very straightforward. Raise and support the car high enough to remove the rear tires. The instructions that came with my kit seemed only to cover RCs, not QCs. Install the pads (using the zipstrip) onto the leaf springs so the Caltrac pin is located in the center of the pad.