SPL Rear Adjustable Upper Arm Set | G8x M2, M3, M4
From full racing to high-performance street applications, SPL Parts’ suspension products deliver the adjustability and performance needed for custom alignment setups. Their commitment to high-quality construction and innovative engineering is why these products are trusted not only by top race teams, but also by consumers who demand the best alignment solutions for their high-performance street cars.
The SPL G8X adjustable Rear Upper Arms (RUA) are essential for maintaining correct rear camber and reducing tyre wear on both street and track vehicles. The factory BMW suspension has an aggressive camber curve through bump travel, which becomes especially noticeable on lowered cars. Excessive negative camber leads to premature inner-edge tyre wear and reduced traction under acceleration, while insufficient camber limits rear grip during cornering. SPL’s Rear Upper Arms provide a wide adjustment range for precise rear camber alignment, optimised for street or track use, while eliminating bushing deflection through the use of smooth-articulating, Teflon-lined rod ends in place of the soft OEM rubber bushings. This kit replaces the factory links commonly known as the rear wishbone and rear guide links.
The G8X Rear Upper Arms include gun-drilled 2024 aluminium traction links to reduce weight, along with a 6061-T6 billet aluminium curved upper camber arm, both finished in black anodising for corrosion resistance and durability. SPL’s exclusive 360-degree 6061-T6 aluminium Rotating Clamp design allows quick, precise adjustment of the dogbone, while the curved upper arm uses an innovative double-adjuster system that enables easy and accurate camber changes without removing the arm from the vehicle. The clamps are secured with blue-anodised titanium socket-head cap screws, providing accessible adjustment while further reducing unsprung weight without compromising strength. These Rear Upper Links deliver exceptional performance, durability and ease of adjustment — no more struggling with jam nuts while trying to keep bearings correctly oriented.
Sold as a complete kit for one car (4 total arms).
Made in the USA!
BMW G8X REAR ADJUSTABLE UPPER ARMS
Black-anodised and gun-drilled 2024 aluminium links.
6061-T6 billet aluminium curved upper arm with integrated double adjuster.
6061-T6 aluminium rotating clamps for a wider adjustment range.
Titanium socket-head cap screws.
Tapered stainless steel knuckle-mount spacers.
Low-friction, three-piece Teflon-lined FK rod ends.
After 3 other BMW workshops couldn't fix the problem with my M3. SouthernBM sorted it. Excellent to deal with, great communication and customer service.
David Dean
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Took my e60 there, Jimmy was an absolute pleasure to deal with, very honest, explained everything in detail, and provided some great recommendations due to my individual circumstance. Can not recommend highly enough.
Jared Flower
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Andrew Brien @ Southern BM has been helping me for years with my BMWs - he is extremely astute and has a refreshingly customer-first mentality. I trust him to do the best work and only the best!
Leo Ng
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Great blokes down there, Eric is great for those chinese speaking customers looking for either some general quality servicing or even higher end modifications. Good team of humble and honest people, will definitely be back!
Andy Liu
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I Bought my M Performance Brake Kit here and installed today. I got my oil changed. Love the service as always. I only bring my cars to this place eventhough I live in the north side of Melbourne.
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