Factory steel rear trailing arms flex, causing undesired suspension geometry changes under load. BMW engineered a failure point into this stock arm - metal fatigue combined with shock forces from a pothole or curb, have been shown in some cases to cause the arm to buckle, turning a pleasant drive into a visit by roadside assistance. Kit Features: TRW M3/1M Front Control Arms TRW M3/1M Rear Control Arms ECS Upgraded Rear Trailing Arm BMW Headlight Leveling Sensor Rod BMW Rear ABS Bracket TRW Rear Guide Rods Trailing Arm features: Constructed from solid 6061-T6 aluminum Anodized for corrosion resistance Increased strength versus the factory steel arm - this arm fears no pot holes 25% lighter (384 grams versus 517 grams each)
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We put together the ultimate rear geometry overhaul kit to lock down your chassis, eliminate unwanted flex, and give you pin point alignment control. Whether you're setting up for aggressive street driving, track days, or full blown racing, this package transforms how your BMW puts power to the ground.
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Wanting more out of your BMW without having horrid ride quality? This is not only an extremely common handling upgrade, but one of the best upgrades you can do. These control arms are much sturdier than your factory units and feature much stiffer bushings and ball joints. Not only does this kit give you an extremely effective upgrade, it's the perfect excuse to get rid of your factory arms that are at the edge of being road worthy.
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With the right tools, an experienced DIYer can complete this installation in a single day. For a detailed list of included parts, see the kit contents tab.