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BMW 3-Series (E90 E92) Forum
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Front Control Arm Bushing (FCAB) Options for xDrive
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04-19-2022, 12:12 PM | #1 |
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Front Control Arm Bushing (FCAB) Options for xDrive
I'm in the process of getting the last few bits for my suspension refresh for my 2011 328i xDrive (E92) and was wondering what my FCAB options are. I've read multiple threads also referring to these front arms as thrust arm/upper control arm/traction strut. As part of my parts list, I have brand new Lemförder arms (part #31126768983 & 31126768984).
Options for FCAB I've seen are: 1) Turner Motorsport Spherical Thrust Arm Bearing Set (E90, E91, E92 AWD, E84 X1) - can be purchased with or without arms https://www.turnermotorsport.com/p-5...m-bearing-set/ 2) Syncro Design Works e90, e92 335, M3 Front Control Arms - only 1 option to purchase arms with bushings installed as there is no option to purchase the bushings alone https://syncrodesignworks.com/produc...nt=24380938435 3) STRONGFLEX Front wishbone bush xi 4x4 SPORT - only 1 option to purchase bushings, must purchase 2 https://strongflex.us/e90-e91-e92-04...553503470.html Aside from these 3 options, are there any others?
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COMING SOON: H&R Sport Springs w/Bilstein B8's, ECS F & R Suspension Refresh Kit HD - Level 3, Dinan Fixed Camber Plates, STRONGFLEX Yellow FCAB, M3 Rear Arms, H&R 20mm Rear Sway Bar, Turner Motorsport Performance Rear Sway Bar End Links, ECS Exact Fit SS Lines, 335i Front Brake Swap, ECS Front Caliper Performance Caliper Guide Bushing Set, Turner Motorsport Polyurethane Engine Mount Set 80A, ECS Performance Polyurethane Differential Bushing Set 95A, ECS Performance Polyurethane Subframe Bushing Set 95A
Last edited by rice_smuggler; 04-19-2022 at 01:04 PM.. |
04-20-2022, 11:01 AM | #2 |
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Drives: 09 E90 335i M-Sport 6MT RWD
Join Date: Nov 2017
Location: Ontario, Canada
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The E90 M3 thrust arm bushings work(You will have to press these into your stock arms though
Second option you listed won't work as its for RWD applications |
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04-22-2022, 12:15 AM | #3 |
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I have an E91 xDrive I purchased recently. Ordered the syncro arms and will be installing next week.
This the one you looking for if you have xDrive. https://syncrodesignworks.com/collec...ro-thrust-arms |
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bimmermech12355.00 bshambam195.50 |
04-25-2022, 08:20 PM | #4 | |
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04-28-2022, 12:45 PM | #5 |
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I have the adjustable powerflex in my 335i xdrive. Haven't touched them for 3 years. They only squeak when turned full lock. X drive cars have steel front control arms that can't be replaced with the ones from rear wheel drive cars.
https://www.powerflexusa.com/shop/pr...=1788#attr=505 Edit: If you already have the new arms with bushings installed why not just run them (FYI they need to be tightened with the car on the ground / with all the weight on the wheels). If you wanted different bushings, you should be fine to use your old arms and press in new bushings into your old arms. You can get bushing press / puller kits on amazon that will work. That's what I did. Last edited by vSOAPYv; 04-28-2022 at 12:50 PM.. |
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04-30-2022, 07:02 PM | #6 | |
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A bit of background though, when I bought the car 1 of the bushings on the thrust arms were completely shot. Car came on BC Racing coilovers. I replaced it with syncro arms. I also replaced the wishbone(control arms), outer tie rod ends, and ball joints that connect to the thrust arms. I also did an alignment as well. My car is at 188K km. While the change was significant for me there were also a lot of other factors at play. I'm not sure how much of it can be attributed to the Syncro arms but I love them so far. Alignment before Front Caster (L/R) 8.1*/7.9* Camber (L/R) -2.8*/-2.9* Toe (L/R) -1.5*/-0.6* Rear Camber (L/R) -2.1*/-2.5* Toe (L/R) -0.15*/0.25* Alignment after Front Caster (L/R) 7.5*/7.4* Camber (L/R) -3.0*/-2.8* Toe (L/R) 0.05*/0.05* Rear Camber (L/R) -2.1*/-2.4* Toe (L/R) 0.10*/0.10* |
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bimmermech12355.00 |
05-01-2022, 04:36 PM | #7 |
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Thanks for letting us know how the control arms affect the ride and handling as well as providing a detailed description of the circumstances of your particular vehicle. It is clear that monoballs are superior to any other bushing, with the only negative being the price.
I hope the alignment shop wasn't far from you, those before toe angles are absurd, but to be expected when doing such an upgrade. |
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05-13-2022, 11:43 AM | #8 |
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Polyurethane Thrust Arm Bushings
Powerflex and Strongflex both make polyurethane bushings for the Thrust Arms of the xi. The Strongflex are a little cheaper. There have been some reports of squeaking from poly bushings, but some have obviously not had this issue. How do these compare with the m3 rubber bushing in terms of performance, durability, and NVH. I unfortunately can't afford the mono-ball suspension and would be concerned about NVH.
Peter |
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05-09-2023, 11:38 PM | #9 |
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Update. I installed the Powerflex polyuerethane bushings in my thrust arms and rotated the eccentric bushing to provide maximum caster. 10,000 Miles since installation. There was no dicernable increase in NVH. I was also not able to discern any difference in steering response, but this was with snow tires in a 205/55-16 size. In summary, I am glad I went this route, but the ultimate performance option for those who are not in a snow belt would be the syncrodesignworks monoball fittings.
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03-21-2024, 02:01 AM | #10 | |
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