The aluminum front subframe fitted to the E63/E64 M6 is prone to failure at the point where the sway bar bracket clamps to the subframe. Once this point starts to weaken and bend, it can lead to the subframe tab fracturing or the bushing clamp cracking. Our new ARB bushing kits include Black 95A durometer bushings and a high-grade zinc-coated steel plate to strengthen the frame, providing the ultimate in the sway bar location and body-roll reduction. FEA testing has shown the addition of PFF5-4203PLT, to reduce stress in the subframe by 22.5%.
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