SPL Parts Rear Upper Arms
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Precision Camber Control. Superior Durability.
Maintain proper rear geometry and significantly reduce tyre wear on the street and track with SPL Parts Adjustable Rear Upper Arms. Specifically designed for the BMW F8X (M2, M3, M4), these arms are a necessity for lowered vehicles. The factory BMW suspension features an aggressive camber curve through bump travel; these arms provide the adjustment range needed to correct excess negative camber, ensuring maximum traction during acceleration and optimal grip through corners.
This comprehensive kit replaces both the factory rear wishbone and rear guide links (4 arms total). By swapping soft factory rubber bushings for smooth-articulating, Teflon-lined FK rod ends, you eliminate unwanted bushing deflection. Constructed from gun-drilled 2024 aluminium with Blue Anodised Titanium hardware, these arms reduce unsprung weight while offering the easiest adjustment on the market via SPL's exclusive 360-degree rotating clamp design—eliminating the need for frustrating jam nuts.
Key Features
- Complete Camber Solution: Replaces all four rear upper links (wishbone and guide links) for total control over rear alignment.
- Rotating Clamp Design: 6061-T6 aluminium clamps allow for quick, precise adjustment without fumbling with jam nuts or bearing orientation.
- Weight Reduction: Gun-drilled 2024 aluminium links and Titanium socket head cap screws shave unsprung weight without compromising strength.
- FK Teflon-Lined Bearings: Self-lubricating 3-piece rod ends provide quiet operation, low friction, and eliminate deflection under heavy cornering loads.
- Corrosion Resistance: Black Anodised finish on aluminium components and stainless steel knuckle mount spacers for long-term durability.
- Made in the USA: Engineered and manufactured to professional motorsport standards.
Specifications
- Link Material: Gun-drilled 2024 Aluminium
- Clamp Material: 6061-T6 Aluminium
- Hardware: Blue Anodised Titanium / Stainless Steel Spacers
- Bearing Type: PTFE-lined FK Spherical Bearings (-54°C to 163°C range)
- Position: Rear Upper (Wishbone & Guide Links)
- Quantity: Sold as a Complete Kit (4 Arms)
Vehicle Fitment
- BMW M2 / M2 Competition / M2 CS (F87)
- BMW M3 (F80)
- BMW M4 (F82 / F83)
What's In The Box?
- 2x SPL Parts Rear Upper Wishbones
- 2x SPL Parts Rear Upper Guide Links
- Titanium Adjustment Hardware
- Stainless Steel Spacers
Note: Professional installation and a comprehensive wheel alignment are required to properly set camber and maximise tyre life.
No instructions available for this product.

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