Porterfield R4-E Endurance Racing Compound Disc Brake Pads for 4 Piston Kelsey Hayes Calipers (1965-1966) Mustang



Set of 4 front brake pads for any early Ford with the four piston Kelsey Hayes front disc brake calipers.

65-66 Mustang w/Front Discs

67 Mustang w/Front Discs exc. 428 V8

67 Mustang 428 V8 w/Front Discs


67 Cougar 289 V8 w/Front Discs/390 V8 w/Front Discs

A Carbon Kevlar compound made to last a bit longer than the original R-4 compound. Porterfield’s R4-E pads have an average coefficient of .460 and perform best at temperatures averaging over 600ºF. The R4-E compound is designed to endure higher prolonged temperatures and still have pad life as long or longer than Porterfield R-4. This pad is great for club enduros events and applications where temperatures are at their maximum.