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SPL PARTS INC.
SPL Parts 2014+ BMW M2/M3/M4 (F8X) Rear Upper Control Arms
SKU: S015 SPL RUA F8X
Moderate — 2–4 hours
Description
Part #: SPL RUA F8X
BMW F8X adjustable Rear Upper Arms (RUA) are an absolute necessity to maintain proper rear camber and reduce tire wear on the street and track. The stock BMW setup has an aggressive camber curve through bump travel, which is very apparent on lowered cars. Excess negative camber causes premature tire wear on the inside edge, and reduced traction on acceleration while too little camber will limit rear grip while cornering. Our Rear Upper Arms provide a wide adjustment range for precise rear camber alignment that is easily optimized for street or track driving while eliminating bushing deflection with smooth articulating Teflon lined rod ends in place of the soft factory rubber bushings. Our kit replaces the factory links commonly referred to as the rear wishbone and rear guide links. BMW F8X Rear Upper Arms are gun drilled 2024 Aluminum links to reduce weight, then are Black Anodized to prevent corrosion and provide a durable finish. Our exclusive 360 degree 6061-T6 Aluminum Rotating Clamp design allows for quick, precise adjustment. Our Clamps tightened down with Blue Anodized Titanium Socket Head Cap Screws gives easy access to adjust camber settings, shaving off even more unsprung weight without compromising strength. Our Rear Upper Links provide superior performance, durability, and ease of adjustment. Long gone are the days of fumbling with wrenches to tighten jam nuts while trying to trying to keep your bearings oriented correctly. FK Spherical Bearings and Rod Ends are manufactured in Connecticut and utilize a Teflon liner to provide quiet operation, lower friction, smooth articulation, and eliminates bushing deflection under load. The liner is also self-lubricating and self-cleaning, offering robust reliability for street and track use. The PTFE liner is chemically bonded to the inner diameter of the race, and offers a very high load carrying capacity that has greatly increased dynamic wear characteristics.
Features:
- Proudly made, engineered, and assembled in the USA.
SPL BMW F8X M2 / M3 / M4 Rear Adjustable Upper Camber Arms
MIA's Description
Constructed from black anodized and gun-drilled 2024 aluminum links, these arms are designed to reduce weight while providing durability and corrosion resistance. They feature 6061-T6 aluminum rotating clamps for quick and precise adjustment, secured by titanium socket head cap screws. The kit also includes tapered stainless steel knuckle mount spacers and FK Rod Ends with PTFE liners, rated for operating temperatures from -65º to 325ºF, ensuring quiet operation and smooth articulation.
Fitment
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Specifications
| Brand | SPL PARTS INC. |
| Part Number | S015 SPL RUA F8X |
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Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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