BRZ/GR86/FRS/GT86 Rear Sway Bar Geometry Correction Mounts

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$221
SKU:
BRZ86-RSBMount
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Product Overview

In an ideal setup, the sway bar end links of a suspension should be perpendicular to the lower control arm. The end links should also be perpendicular to the sway bar arm. For the BRZ, GR86, GT86, and FRS, when you lower the car, this geometry becomes less than ideal. When that happens, the effective spring rate of the sway bar becomes less linear, which can cause the rear end to behave less predictably.

Our kit moves the sway bar mounting position higher to get the suspension closer to an ideal setup for lowered cars. In addition, the kit has 3 different fore and aft positions, which allow you to adjust for the best geometry if you have an adjustable sway bar with multiple mounting holes.

For cars other than the second-generation BRZ, the rear sway bar is mounted to the subframe. The second-gen BRZ has the sway bar directly chassis-mounted. Using our kit, the sway bar will be directly chassis-mounted like the second-generation BRZ.

Cutting the stock brackets off the subframe is required on all cars except the second-gen Subaru BRZ. On the stock BRZ, you would simply remove the rear sway bar mount frame, which will drop 5.5 lbs of weight.

Reviews

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  • 5
    Excellent

    Posted by Justin on 10th Dec 2025

    These are very nice and I'm really happy with my purchase. It made the rear much stiffer on stock sway bars than it was before. Before, the car would roll a lot more and basically fall off in a turn even with normal street driving. Now the rear feels much more stiff with more linear body roll. I might not even get a stiffer sway bar setup now that the car handles so well.

  • 5
    Sway Bar Geometry Correction Mounts

    Posted by Robin Bennett on 2nd Oct 2025

    Installed these today on my MY24 BRZ tS, with Ohlins R&T coilovers, lowered about 200mm all round. Prior to installation, the sway bar angle was about 20 degs up. After installation the angle was parallel to the ground. Perfect. The install went pretty smoothly, getting the frame bolts back in was a bit of a fiddle. Make sure you position the mounts prior to torquing the frame bolts. Worth taking a little time to pre-fit everything before torquing. Will report back after my next rack day.

  • 5
    Must have for lowered vehicles

    Posted by Tim Williams on 22nd Apr 2025

    This kit is absolutely required if one decides to run coilovers. It helped make the turn in response feel less like riding a knife edge to something more composed and confidence inspiring. The rear loads up in a more predictable manner during weight transfer and feels more consistent. Pair with the endlinks offered as well. WARNING: if you are running the verus engineering diffuser kit. You will need to fabricate new mounting brackets. You lose the attachment points for the aero piece as they use thr factory swaybar mounting location on the sub-frame to mount the diffuser.