The Extreme+ system comes with the 1-piece Monoblock 6-piston, 6S caliper mounted to a 14", 1 piece slot, drill, zinc plated rotor. The 6S caliper is fully machined in Phoenix, AZ from a US sourced 2618 Aluminum forging, includes stainless steel pistons and abutments, D.O.T. compliant dust and weather seals and uses the popular D1247 pad type. Baer’s unique backing plate not only acts as a caliper mount, but also houses a modern 1-piece park brake shoe assembly. Stainless braided hoses and hardware are also included. The 14” Extreme fits most 18” or larger wheels.