Link to upgrade:
http://www.turnermotorsport.com/p-12...t-e82-e9x.aspx

The front upper and lower control arms from the E9X M3 are a direct bolt-in replacement upgrade for the stock parts on the non-M E90/E91/E92/E93 3-series and E82/E88 1-series. With the M3 components the fluid-filled bushings of the standard suspension are replaced with solid rubber cores or a sealed monoball-joint, making the suspension stiffer, more responsive, and longer lasting.

This package includes:
M3 front upper control arms (thrust arm, tension strut)
The upper control arms eliminate the fluid-filled stock bushing which is very prone to leaking the fluid and cease being effective. The solid rubber M3 bushing is also a bit stiffer for more precise steering and control.

M3 front upper inner bushings

M3 front lower control arms (wishbone)
The M3 lower control arm has a sealed inner bearing instead of the rubber-isolated stock bushing. The bearing allows the lower arm to rotate freely instead of binding up. It's also a bit longer and curved slightly to give more negative camber (adds .75 of negative camber).

M3 headlight adjusting rod
Replaces the stock rod on cars with adaptive headlights.
With the added negative camber the steering is sharper and understeer is reduced. And the stiffer bushings and bearings deflect less which also improves steering feel and response. Since all of these parts are from the M3 there is no question on quality or longevity; no doubt as to their effectiveness or reputation. There's almost no downside to this upgrade. These are intended for street cars but even lightly tracked cars will see significant benefits to the handling and response.




This M3 upgrade package fits the following BMWs:
2008-2012 E82 BMW 128i 135i
2006-2011 E90 BMW 325i 328i 330i 335i - Sedan
2006-2011 E91 BMW 328i - Wagon
2007-2012 E92 BMW 328i 335i 335is - Coupe
2007-2012 E93 BMW 328i 335i - Convertible