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2004 BMW 325Ci Base Coupe
BMW Home > 2004 BMW 325Ci Base Coupe > Suspension & SteeringSuspension Upgrades & Performance 

Suspension Upgrades & Performance

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Powerflex Polyurethane Trailing Arm Bushings
Powerflex Polyurethane Subframe Bushings

Racing Dynamics Strut Braces

Racing Dynamics' professional race car engineers designed this strut brace for chassis stiffness and ease of mounting. A specially designed extrusion was used for increased stiffness and to avoid cutting and welding together multiple pieces (an inherently weaker design). End plates are machined on high speed CNC machining centers for exactness and repeatability ensuring the BMW owner of the finest strut brace available anywhere.

Turner Motorsport Strut Tower Reinforcement Plates

A common weak point on the 3 series BMW is the rear shock tower. This kit mounts on top of the rear shock tower and can either be bolted or welded in place. These plates are thicker than the factory reinforcement plates.

Turner Motorsport Subframe Reinforcement Kits

The E46 rear driveline and suspension are very similar to that of the E36. An unfortunate side effect of this is that the E46 also shares some of the same problems as the E36. One of these problems is the rear mounting points for the subframe, which can rip out from their spots in the sheet metal. This happens because the rear differential transmits the torsional load from the engine through the subframe, then into the chassis. This constant loading and unloading weakens the sheet metal and causes it to fatigue and separate from the chassis. BMW tried to fix this problem in the E46 by placing a cross member on the front two mounting points of the subframe. This cross member keeps the front mounting points from having problems by placing the bushing and the stud in double-shear, thus reducing the twisting action on the sheet metal. The unfortunate side effect of this is that the load from the front of the subframe now gets transmitted to the left rear of the subframe. This is where many failures of the chassis on low mileage street cars and race cars. This product reinforces the chassis sheet metal at the subframe mounting points. This is done by thickening the metal and distributing the load over a larger area. This kit will save time when repairing the chassis, and is also strongly recommended as a preventative maintenance item. NOTEALL: this kit requires welding. Additionally, you will need to remove the driveshaft, exhaust, trunk interior, rear subrafame and suspension. Professional installation recommended.

Tow Hooks and Bars

BMW Home  >  2004 BMW 325Ci Base Coupe > Suspension & Steering  >  Suspension Upgrades & Performance 

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Browse Suspension Upgrades & Performance for all 3-Series E46 (1999-2006) vehicles

Page last updated: Wed 3/14/2018 12:07:01 AM
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