BimmerWorld E46 Rear Subframe/Chassis Reinforcement Kit

Solves a problem that plagues the E46 3-series

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Price:
$129.99

The E46 Rear Subframe/Chassis Reinforcement Kit solves a problem that plagues the E46 3-series just as it did with the earlier E36 3-Series models. This kit is developed in-house at BimmerWorld and has more surface area and covers more of the problem areas than older competitor's kits.

The rear subframe--to-chassis attachment points on the E46 are all failure prone and can rip away from the unibody after time. This can occur with regular road use, and if you drive your BMW E46 hard, then chances are very high that you'll need to repair this area at some point in the future. We highly recommend doing this modification to any car that sees autocross, driving schools, and race use BEFORE the damage occurs. Our E46 reinforcement plates are a factory fit and can be welded in when subframe bushings are replaced. 

This kit applies to all BMW E46 cars, including the M3. 

The E46 Rear Subframe/Chassis Reinforcement Kit consists of 4 main subframe mounting point reinforcements, spacers to realign the cross member, hardware, and plates to cover the access panels in the trunk.  

  • Welding is required.
  • Fits all E46 models, including M3
  • Protects subframe and chassis from costly damage
  • Factory-like fitment
  • Must-have for any and all E46s driven hard on the street or track

Made in the USA

Note: We also highly recommend replacing your worn rubber subframe bushings with Powerflex polyurethane units. This kit comes in Street (70A) or Black Series (95A) compound to suit your driving environment. This will also help reduce the risk of chassis failure by keeping the subframe secure and not jerking at the chassis mount locations.


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  • I am extremely pleased with this order. The price was competitive and your expedited delivery charge was surprisingly low. I needed the part fast and you exceeded my expectations. I especially appreciate your gentleman who over the phone ensured me that the part was indeed in stock and would be shipped immediately.
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