This system features brackets to relocated your factory caliper to allow the use of our 15 inch 1pc slot, drill, zinc plated directional rotors. The EradiSpeed1 is a simple bolt on (no bleeding of the brakes required). By increasing rotors diameter, you increase torque and leverage of the brake. A very popular upgrade for customers increasing wheel diameter that want to improve braking, as well as a visual impact behind the open wheel Furthermore, the directionally vaned structure of the rotor improves cooling efforts.Rotor Diameter:15 inch 1-piecePiston Count:Uses your existing stock calipersPad Type:Uses stock pads. Baer offers pads for the stock calipers, part numbers listed below:Optional Pads:2005-2006 Pickup with Rear Drum Brakes - Front Sport Pads D10922006 - SS Truck only - Front Sport Pads D07852007-2008 Pickup - Front Sport Pads D10922009-2015 Pickup - Front Sport Pads D13632007 SUV - Front Sport Pads D10922008-2015 SUV - Front Sport Pads D1363Minimum Wheel Size:19 inch (Use template to verify fitment, link below)Includes:15 inch 1pc slot, drill, zinc rotors, brackets and hardwareNotes:Designed to be used with 2005-2014 GM 1/2 ton Pickup 2WD+4WD and 2015 2WDAlso fits:2007-2014 GM SUV and 2015 2WD