SPL Parts Titanium Series Adjustable Front Tension/Trailing/Caster Arms for BMW E8X E9X F8X 1 Series 3 Series M2 M3 M4 (E82 E88 E90 E91 E92 E93 F80 F82 F83 F87) Spherical Bearing Control Arms Not for xDrive

BMW E8X E9X F8X Front Radius/Thrust Arm Upgrade by SPL – Titanium Series

Transform the front-end of your BMW with SPL’s premium Titanium Series front radius arms. This adjustable thrust arm kit replaces the factory rubber-bushed links with motorsport-grade FK JMX PTFE-lined monoballs for razor-sharp steering, rock-steady braking stability and repeatable geometry on fast road, track day and drift builds. Expect quicker turn-in, enhanced feedback and precise caster or castor control with on-car adjustment.

Built to perform and built to last: gun-drilled 2024 billet aluminium links slash unsprung mass without compromising strength, while the unique 360 degree rotating 6061-T6 clamp makes fine tuning alignment fast and accurate. Blue anodised titanium fasteners keep weight down and strength up, and the supplied stainless shims allow you to tune anti-dive for extra confidence under hard braking. Hardened FK JMX three-piece rod ends with PTFE liners deliver smooth articulation and zero bushing squish under load.

We run these arms on our own cars and customer builds and they deliver every time: sharper response, consistent handling and alignment that stays locked in. Our customers love the quality, the adjustability and the Made in USA manufacturing.

Highlights

• Wide caster or castor range for precise front-end geometry and balanced left-right setup
• Monoball bearings replace OE rubber for immediate steering response and improved brake feel
• Anti-dive tuning via stainless spacers for added stability under heavy braking
• Gun-drilled 2024 aluminium links reduce unsprung weight for better grip and control
• Blue anodised titanium hardware for strength and weight savings
• Exclusive rotating 6061-T6 clamp for quick, accurate on-car adjustment
• FK JMX high-misalignment, PTFE-lined rod ends for durability and smooth movement
• ASTM A574 socket head cap bolts for maximum articulation and 170,000 psi minimum tensile strength
• PTFE liner operating range from -65 to 325 F for street and circuit use
• Sold as a left and right pair. Made in the USA

Compatibility

BMW platforms:

• E82 E88 1 Series, M and non-M (2008+)
• E90 E91 E92 E93 3 Series, M and non-M (2006–2013)
• F80 M3 (2014+)
• F82 F83 M4 (2014+)
• F87 M2 (2016+)

Note: Not suitable for xDrive all-wheel drive models.

Part number

SPL TR E9X

Why enthusiasts choose this upgrade

If you’re chasing front-end bite, repeatable alignment and confidence under braking, these SPL radius arms deliver. Ideal for fast road, track day and drift builds where precision matters. Reduce compliance, sharpen response and dial in the front geometry your BMW deserves.

Installation and alignment

Professional fitting and a proper alignment are recommended. We can install and set these up at MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

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