E30 adjustable Rear Subframe conversion
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E30 adjustable Rear Subframe exchange program
The stock e30 rear subframes does not allow you to align the rear wheels. Alignment is a critical point in spec e30 as well as general tracking/autocrossing. A must when lowering your car. Its night and day difference. When an e30 is lowered, the car has alot of negative camber. We make and sell camber/toe correction brackets to require critical welded and alignment for those of you who can weld.
If you want a bolt up solultion then this is it! This is a core exchange program. You send your stock straight/rust-free subframe in, we add camber/toe adjustment brackets as well differential reinforcements and send it back! This is a bolt up way to get an adjustable subframe that has both camber and toe adjustment with eccentric hardware. Send us back your STRAIGHT/RUST-FREE core and we will refund you the core charge.
Do not be fooled by inferior kits consisting of bent sheet metal tabs that are flimsy and inferior. The fitment is poor on the eccentric bolt which increases the likelihood your car will go out of alignment over time or if driven aggressively. We have had customers get their cars out of alignment in a SINGLE track event with those kits!
We can modify BMW e28, e30, e32, e34, e36 318ti, and Z3 rear subframes. By default these subframes come with the camber tabs welded so that the lowest point is where the factory hole is. That means you will only be able to dial out camber (90% of e30s need it like this). Under certain circumstances or by customer request we can weld them so you can dial in even more negative camber.
For toe we weld them centered. That means you will have .625 adjustment in both directions from factory. Again, this covers 90% of e30s. If you have an alignment sheet or need the adjustment only one way, let us know and we will accommodate you.
We also offer as an added option trailing arm mounting point reinforcement gussets. These are recommended for wheel to wheel racers, drifters, and the hardest of track use where some contact or rough use is to be expected. They help to reinforce the pocket where the trailing arm mounts adding that additional support to strengthen them and prevent bending or breaking. Pictures of them installed can be found HERE
These are spec e30 legal!
How long does the modification take?
To ensure a quality and more durable part, we now powdercoat all of our subframes at no additional cost. If you do not supply a core and we must source one, then add another week. So anywhere from 1 to 3 weeks depending on options. Supplying your subframe speeds the process along. You can use the box it comes in to ship your old subframe back. Your reworked subframe will come with our eccentric hardware. If you choose to send your core in to be worked, you will not be charged the core fee. If you will sending in your core after you received the rework you will be charged the core fee. Once we receive your core we refund you with 7-9 days using the method you paid with (if within 30 days of receipt).
NOTE: WE PRESS IN OUR SUBFRAME BUSHINGS FREE OF CHARGE. If you add the bushings to your cart we can press them into the subframe at no extra cost. If you press out your subframe bushings we will refund you $25 off the price.
Core exchange options
This will explain the core options.
If you chose "I will supply my subframe upfront". You will not pay the core charge upfront. We will wait until we get your subframe which is why you are not charged. This option is the fastest. Supplying your subframe speeds the process along. If we must source a core then this adds a week to turn around time.
Providing us your core is the best way to ensure it is identical to what is on your car. While e30, and z3 subframes are all functionally the same fit there are minor differences in abs routing tabs, exhaust hanger pick up points etc that we do not differentiate between. This is especially true with e30 m3 subframes. All of the subframes we stock will work across the model cars that are listed here, but if we are not re-working your subframe expect that there may be some minor differences between what you receive and what is on your car.
If you chose "I will return my subframe after", then you will be charged the core fee upfront. This will also add a week to the turn around time because we must source a core to modify for you.
If you choose "I will not be sending in my core" then you will be charged the core fee. This will also add a week to the turn around time.
CORES MUST BE RETURNED IN 30 DAYS FOR A REFUND. ALL CORES RETURNED AFTER 30 DAYS ARE ONLY ELIGIBLE FOR STORE CREDIT NO EXCEPTIONS. ALL CORES MUST BE IN OEM UN MODIFIED CONDITION, WE DO NOT ACCEPT PREVIOUSLY MODIFIED COMPONENTS FOR CORE. SERIOUS RUST ISSUES, MAJOR CRACKS, OR BENT SUBFRAMES ARE ALSO NOT ACCEPTED AS A CORE. SOME MINOR CRACKS MAY BE ACCEPTABLE PLEASE CONTACT US WITH PHOTOS FIRST.
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