Hi. Had the same question 20K miles ago. I went for the aftermarket stuff with no difference......noise, dust, stopping power, etc. Good luck.

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Adam Reinosa
91 300E 190K
81 911SC 210K
61 MB 190C 90K - sold...sigh.
70 914-6 - DUI victim - sigh
911T - Fire victim
Renault Dauphine '62
67/Cougar GT;70 Challenger 440 Mag
www.wetstart.com - OEM future option coming soon