#1:
11-30-2012, 12:06 AM
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Rear Suspension Upgrades: RSB, Endlinks, Support Brace
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Title: Junior Member
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Location: DC Metro
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Car: 2012 BM9 2.5GT
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Posts: 84
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iTrader: (2)
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Hopefully this helps some of you guys who are on the fence on installing a rear sway bar (RSB), endlinks, and/or stabilizer brace. I personally love my new setup. Very nice and stable in hard turns and corners.
PARTS I PURCHASED - AVO Rear 21mm Stabilizer Bar (RSB) (S2C07G1HS021J)
- Kartboy Endlinks
- AVO Rear Stabilizer Mount Brace (S2C08G1HT002T)
- Mobil 1 Synthetic Grease (red)
- (2) Kartboy front spacers
TOOLS I USED - 13mm, 14mm, 16mm, 17mm, 19mm sockets
- 13mm, 14mm, 16mm, 17mm, 19mm ratcheted wrenches
- 1/2" torque wrench
- 3/8" socket wrench
- 1/2"-to-3/8" adapters
- 1/2" breaker bar
- 3/8" 5mm hex socket
- ramps or jack stands
- hydraulic jack
CAVEAT: THE FOLLOWING STEPS MAY BE INCOMPLETE, SO USE AT YOUR OWN RISK!
- Put the rear of the car on jack stands (one-notch is fine)
- Optional: Support the rear crossmember with the hydraulic jack in case you accidentally remove both large 19mm crossmember bolts; your whole bottom end WILL fall down, so don't do that!
- Starting with the LEFT endlink, remove the bottom bolt and nut (REUSE)
- Remove the top bolt on the LEFT endlink using a ratcheted wrench and the 5mm hex socket
- Repeat the previous two steps on the RIGHT side
- The endlinks should be free from the control arms and the old sway bar
- Remove the bolts from the LEFT stabilizer bracket (REUSE bolts and bracket)
- Repeat about step for the RIGHT side
- The rear sway bar should be free; slide it out between the exhaust and the bottom-side of the trunk
- Grab the AVO rear sway bar (RSB)
- Liberally grease the bushings and install on the sway bar
- Insert the AVO RSB from the rear of the car, above the exhaust and below the bottom-side of the trunk
- For now, hang the AVO RSB using just the OEM sway bar brackets
- One side at a time! Loosen the LEFT crossmember bolt with the breaker bar/ratchet + 19mm socket
- Remove the black circular plate between the cylindrical mount and the bolt (NOT resused)
- Grab the LEFT-HAND (LH) AVO Support Brace
- Install the brace using the big 19mm bolt; perfectly align the brace between the OEM RSB bracket (torque to 100Nm afterwards)
- Reinstall the two RSB bracket bolts and spacers
- Repeat the above three steps for the RIGHT-HAND (RH) side
- Grab the Kartboy endlinks
- Grease the insides of endlinks; the sleeves slide out
- Starting with the LEFT, feed the Kartboy bolt towards the center in the following sequence: washer->Kartboy front spacer->Kartboy endlink (top)->Kartboy front spacer->AVO RSB->washer->nut
- Reinsert the bottom bolt, feeding it front-to-back, in the following sequence: washer->control arm hole->fat Kartboy rear spacer->Kartboy endlink->skinny Kartboy rear spacer->control arm hole->nut
- Repeat the above three steps for the RIGHT side
- Ensure the AVO RSB, endlinks, and bracket are all properly aligned, then torque down accordingly:
- Torque endlink bolts: 44.7Nm
- Torque bracket bolts: 40.7Nm
- Torque crossmember bolts: 100Nm
- Remove the hydraulic jack, tools, people, fingers, limbs, head, and anything you don't want to lose from under car, then lower!
Last edited by nuclrxn; 11-30-2012 at 12:11 AM..
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