Description
The SPL Parts Adjustable Rear Upper Arms (Part #SPL RUA F3X) are designed to solve one of the most common alignment limitations on BMW F2X and F3X chassis vehicles. Factory eccentric washers do not provide enough adjustment to bring rear camber back into specification on lowered or performance-driven cars. These arms greatly expand camber adjustment range while eliminating bushing deflection that causes alignment drift under load.
Built with lightweight, gun-drilled aluminum links and SPL’s signature 360-degree rotating clamp system, these rear upper arms allow fast, precise, jam nut-free on-car adjustments that stay locked during hard cornering, braking, and acceleration.
- Brand: SPL Parts
- Part Number: SPL RUA F3X
- Position: Rear Upper
- Component Type: Adjustable rear upper control arms / toe rod links
- Adjustment Range: Significantly increased rear camber adjustability
- Center Links: Gun-drilled 2024 aluminum to reduce unsprung weight
- Clamp Design: 6061-T6 aluminum 360-degree rotating clamp system
- Hardware: Blue anodized titanium socket head cap screws
- Rod Ends: Low-friction, 3-piece FK PTFE-lined spherical bearings
- Operating Temp Range: -65 F to 325 F
- Adjustment Method: Simple on-car adjustment with a 3/16-inch Allen key
- Sold As: Pair
- Manufacturing: Made in the USA
Performance Benefits
- Restores proper rear camber on lowered BMWs
- Eliminates alignment change caused by worn rubber bushings
- Improves rear-end stability and predictability
- Provides smooth articulation with high load capacity
- Makes alignment adjustments faster and more precise with no jam nuts
FK spherical rod ends feature chemically bonded PTFE liners for quiet operation, smooth motion, and long service life in both street and track environments.
Construction & Materials
- Gun-drilled 2024 aluminum center links, clamps, and clevises
- 6061-T6 aluminum rotating clamps
- Blue anodized titanium hardware
- FK PTFE-lined spherical rod ends (self-cleaning, US made)
Vehicle Fitment
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BMW F2X (2010–2019)
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F20, F21, F22, F23
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BMW F3X (2011–2019)
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F30, F31, F32, F33, F34, F35, F36
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