Finn...I purchased the black mounts from UUC 3 months ago. What is the best way to determine if it is rubber or poly? Since I have them in hand, but not installed, and if I do have poly, is the difference great enough to dump them and buy from Rogue for track/street applications? Thanks...
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'06 Z4 ///M Roadster: Silver Gray Metallic; Gray soft top. Zeckhausen CDV. ESS VT1 445 Supercharger. APEX ARC8's. Dunlap Direzza Star Spec's. Strong Struts. Royal Purple. RPI Exhaust w/ DKF hangers.
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