SPL Parts Rear Lower Trailing Arms – BMW E8X / E9X | Anodized Black

Dial in your E8X or E9X BMW's rear suspension geometry with SPL Parts' Rear Lower Trailing Arms. Engineered for the BMW E8X 1-Series and E9X 3-Series platform, these adjustable trailing arms replace the factory rubber-bushed units with SPL's precision billet aluminum construction and rod end bearing design — eliminating compliance and deflection for precise, repeatable rear suspension geometry. The anodized black finish provides corrosion resistance and a clean, purposeful underbody appearance.

Adjustability allows correction of rear toe and trailing arm geometry for lowered, track-prepped, or alignment-critical builds where factory fixed-length arms are insufficient.

Key Features

• Adjustable Length: Threaded rod end construction allows precise adjustment of rear trailing arm length for accurate toe and geometry correction on lowered or modified E8X/E9X builds
• Billet Aluminum Construction: CNC-machined billet aluminum body for superior strength and rigidity compared to factory stamped steel arms
• Rod End Bearing Design: Eliminates the compliance and deflection of factory rubber bushings for precise, consistent rear suspension response — ideal for track and performance street use
• Anodized Black Finish: Hard anodized black finish for corrosion resistance and a clean, aggressive underbody aesthetic
• E8X & E9X Fitment: Direct fit for BMW E8X 1-Series (128i, 135i) and E9X 3-Series (328i, 335i, M3) — verify your specific chassis before ordering
• SPL Parts Quality: Engineered by SPL Parts — a specialist in precision suspension components for performance and motorsport applications

Specifications

• Type: Rear Lower Trailing Arms (Pair)
• Construction: CNC Billet Aluminum
• Bushing Type: Rod End Bearings
• Finish: Anodized Black
• Adjustability: Yes — threaded for length adjustment
• Fitment: BMW E8X 1-Series (128i, 135i) / BMW E9X 3-Series (328i, 335i, M3)
• Part Number: SPL-RTR-E9X

Note: Rod end bearing suspension components are intended for performance street and track use. A professional alignment is required after installation. Verify fitment for your specific E8X or E9X variant and model year before ordering.