Disc brake pads for early Fords with Lincoln calipers - R4
Designed specifically for heavy duty motorsports, the Porterfield R-4 brake pad is able to maintain an average friction level of .50 within a very wide temperature range.
Designed specifically for heavy duty motorsports, the Porterfield R-4 brake pad is able to maintain an average friction level of .50 within a very wide temperature range. Using the latest in ceramic technology, the carbon based semi-metallic R4 materials allow the pad to absorb tremendous amounts of heat and dissipate it at a very even rate, while at the same time insulating excessive heat from the calipers. Another inherent characteristic is the carbon kevlar material warms up to race temperature very quickly. Optimum R-4 operating temperatures are 450°F and above. Throughout the entire heat range, the carbon kevlar material will give extremely consistent modulation and predictably smooth release characteristics up to threshold.
Not recommend for street use!
Front for:
FORD: 65-73 Mustang w/Lincoln Caliper
Set of 4 Pieces