TMS Reinforcement Package | ||
Intermediate Difficulty - Most People Can Do This With Common Household Tools E46 Front Subframe Reinforcement Kit As E46s get older and see more track-use, they start develop cracks and bends in places that see a lot of stress. One of the most stressful areas is the front subframe. It's a good idea to reinforce your front subframe the next time you're doing any suspension work. This kit reinforces the upper and lower tabs of the subframe where the motor mount is located. Requires welding. E46 Strut Tower Reinforcement Plates (Non-M3) Like the E36 before it, the shock towers on the E46 are a notoriously weak point. Under normal driving conditions with a stock suspension it is unlikely that you will ever have a problem. But a sport or race suspension with firm springs transfers much of the energy from pounding the road to the thin sheet metal of the strut tower. This pounding will cause the tower to deform or even crack. These plates will help disperse the energy and save you from costly repairs in the future. Price is for the pair. Applications: all E46 models - 323i, 323ci, 328i, 328ci, 325i, 325ci, 325xi, 330i, 330ci, 330xi - sedan, coupe, cabrio, wagon all E46 M3 coupe, convertible* *Note: the stock M3 upper strut mount already does a good job of dispersing the loads of the suspension. These reinforcement plates will fit a stock mount for additional strength but need to be trimmed to fit inside the strut tower. The are very strongly recommended for all M3s with coil over suspensions. Price: $22.94 Rear Shock Tower Mount Reinforcement Kit 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. These do not fit cabrio cars. TMS Camber Arm Reinforcement Kit This TMS reinforcement kit is used to reinforce the stock rear lower camber arms just like BMW Motorsport does for its own production-class racing efforts. Factory camber arms are made to bend or split above certain loads to break in the event of an accident to help absorb the impact. Under race applications these loads can be exceeded under normal cornering forces. A main benefit of using the stock camber arms is that many racing classes allow for reinforcement of this part, and it increases the overall strength of the suspension. With welding experience, this kit can easily be installed by you. These arms differ from our own adjustable camber arms in that you can still use a streetable bushing on either end making it great for dual purpose street/track cars. They are ideal for racing classes that do not allow for alternate suspension components but do allow for alternate bushing materials. Additionally, the factory control arm is much lighter than most aftermarket camber arms, helping reduce the total unsprung weight. Rear Swaybar Reinforcement Kit (Non-M3) The BMW E46 3-Series chassis is one of the most rigid and well built BMW chassis to date. Even so, it still has some of the traditional BMW weak points. One of these is the rear sway bar mounts. From chassis to chassis the problem has not been identical, but all the damage we have seen has been related to metal fatigue. The metal fatigue is due to the constant twisting and side loading of the sway bar. These forces on the sway bar will cause the mounting points to fail over time. The failure can happen faster with sway bar bind do to improper maintenance of the bushings, however proper sway bar bushing maintenance does not totally eliminate the problem. In the case of the E46 the sheet metal for the bushing bracket does not have enough material to support the loads being transferred to the subframe. We have designed the reinforcement to strengthen and redirect the load to stronger sheet metal. Requires Welding. Does not fit M3. Rear Chassis Reinforcement Kit 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-sheer, 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 we have seen 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. We do this 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. Sorry, discount codes may not be used to further discount this item. 
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