I was honored to be chosen as the prototype truck for R1 Concepts Big Brake Kit. This kit will work with 17'' rims for 2011-2017 Ford Raptors/F150. Stock brake calipers are 2 piston front and 1 piston rear. This kit is 6 piston front and 4 piston rear with stainless steel brake lines. Big thank you to R1 Concepts and Evil Manufacturing!