Porterfield R4-S high performance street and autocross brake pads are great for heavy-duty street and light track applications. Compound is perfect for everyday use while still keeping the highly capable track ready performance. The R4-S features a high friction level that will incease your stopping power with minimal pedal effort.
The R4-S series pads are VERY VERY rotor friendly and yield very low levels of dust; levels are far below OEM equipement or any other high performance brake pads. Your car will stop better and your wheels will stay cleaner longer. Good for autocross, rallies, driving school, and of course daily driving with a little extra stopping power. R4-S pads are avaiable for virtually all vehicles sold in the US and custom R4-S pad sizes for competition style calipers are also available. Vehicle Applications
| Year | Make | Model | Trim | App Notes |
| 1989 - 1998 | Nissan | 180SX | All | None |
| 1989 - 1998 | Nissan | 240SX | All | None |
| 1989 - 1998 | Nissan | Silvia | All | None |
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