^Powerflex makes polyurethane bushings for the non-m; they fit the same although I don't know if they'd have less movement than the M3 bushings. They wouldn't be my choice.
Turner sells BMW motorsport group n bushings at $800. a set; that would be my choice if I wanted stiffer bushings than M3. I see you're in Finland; you can probably just have them shipped from Munich.
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2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, Koni/M3 susp, Apex Arc 8, Mich PSS
Last edited by cvc 22349a; 06-09-2012 at 08:06 PM..
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