This system features the 4-piston S4 caliper mounted to a 11", 2 piece slot, drill, zinc plated rotor. The S4 caliper has D.O.T compliant dust and weather seals and uses the popular DR1 or HB100 pad type. Billet aluminum hubs come assembled with premium bearings packed with Redline synthetic grease and billet aluminum dust caps. Rotors are pre-assembled with NAS high grade stainless hardware. All mounting brackets, stainless braided hoses and hardware are also included. The 11" SS4+ is designed just like Baer's larger systems, but in a smaller package for 15" wheels., , | Rotor Size/Type:, 11" x 1.020", 2-piece, , | Replacement Rotor Rings:, 6910354 (Left) / 6920354 (Right), , | Caliper/Piston Count/Mount Type:, S4 / 4-piston / Lug, , | Replacement Pads:, DR1-C , , | Minimum Wheel Size:, 15" (Use template to verify fitment, link below), , | System Includes:, Calipers, Brake pads, Rotor & Hat assemblies, Billet aluminum hubs w/premium bearings, Billet dust caps, Brackets, Stainless braided brake hoses & mounting hardware, , | Notes:, Designed to be used with OE Mopar 1966-72 B-Body and 1970-72 E-Body disc brake spindles, , | Applications:, - 1970-72 Dodge Challenger w/OE disc spindles , - 1966-72 Dodge Charger w/OE disc spindles , - 1966-72 Dodge Coronet w/OE disc spindles , - 1970-72 Plymouth Barracuda w/OE disc spindles , - 1966-70 Plymouth Belvedere w/OE disc spindles, - 1967-72 Plymouth GTX w/OE disc spindles , - 1968-72 Plymouth Roadrunner w/OE disc spindles , - 1966-72 Plymouth Satellite w/OE disc spindles