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| R-4 Full Race Compound |
|---|
| The R-4 Full Race Compound is designed specifically for heavy-duty
motorsports. The carbon based semi-metallic R-4 materials allow the pad to
absorb tremendous amounts of heat and dissipate it at very even rate. Carbon
Kevlar material warms up to race temperature quickly, which is quite helpful
during restarts, and when track time is limited. When used with cast iron and
steel alloy rotors, the R-4 compound requires minimal bed-in period. Throughout
the entire heat range, the carbon kevlar material will give extremely
consistent modulation and predictably. This is truly the most rotor friendly
racing brake pad material ever. Good for road courses, oval track, rally,
vintage racing, autocross, club events or professional racing events.
Please see note below. |
| R4-E Endurance Race Compound |
| The R4-E Endurance Race Compound is a carbon kevlar compound made
to last a bit longer than the original R-4 compound. The R4-E compound is
designed to endure higher prolonged temperature and still has pad life as long
or longer than Porterfield R-4 does. This pad is great for club enduro events
and applications where temperatures are at their maximum.
Please see note below. |
| R4-S High Performance Street and Autocross Compound |
| For high performance and heavy-duty street conditions. Perfect for prolonged everyday street use while also being capable of tolerating the most severe street use without any fade. This is a rotor friendly pad. The R4-S friction level will give you an impressive increase in stopping ability with very minimum pedal effort. R4-S compound has the absolute lowest noise and dust levels, far below OEM equipment or any other high performance brake material. This compound is good for autocrossing, some drivers' schools, and rallies. The R4-S compound is perfect for street driven cars that are used for HPDE and Time Trial track events. |
| Note:These pads are for racing only, not for street use. Using these pads on the street is essentially dangerous. Race pads require higher levels of heat and friction in order to function properly. These levels cannot be maintained during street driving. These pads will dust, squeal, and may consume brake rotors. |
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