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WAS Auto
| Feature | Standard | Improved | Premium |
|---|---|---|---|
| Low noise | Meets OE | Improved over OE | Premium |
| Low brake dust | Standard | Enhanced | Maximum |
| Friction formulation | Meets OES | Meets OEM | Patented next-generation ceramic |
| Service life | Meets OES | Meets OEM | Up to 3x OES |
| Slots & chamfers | OES | OEM | OEM |
| Shims | 2+ layers | 3+ layers | 3+ layers |