BRZ/FR-S/GT86 Rear Trailing Arm

This is our rear trailing arm concept


It utilizes the same aluminum alloy as our lower control arm, with a 7075-T6 linkage adjuster, and an e-brake cable bracket.  Because the arm is a only a tension/compression member, it is not highly stressed so we tried to maximize stiffness and adjustability with our design.  We used 3G’s as the loading condition

The arm


The fork


The current assembly weighs would be just under 2 lbs, but we may end up changing the fork to a stainless steel one if we feel the aluminum fork is too costly to manufacture.  We feel this is an acceptable compromise because the linkage adjuster can be sacrificed when galvanic corrosion occurs because they are readily available available and are roughly $20 each.


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