SPL Parts Front Tension Rods

Precision Caster Control. Sharper Turn-In.

Transform your front-end geometry and steering feel with SPL Parts Adjustable Tension Rods. Engineered for the BMW E8X, E9X, and F8X platforms, these rods provide a wide range of caster adjustment, allowing you to achieve a precise alignment, compensate for chassis variances, and optimise turn-in response.

By replacing the "mushy" factory rubber bushings with low-friction, smooth-articulating FK JMX Spherical Bearings, you eliminate unwanted deflection and gain a much more communicative steering feel. The inclusion of stainless steel spacers also allows for the fine-tuning of anti-dive geometry, keeping the nose flatter under heavy braking. Constructed from gun-drilled 2024 aluminium with Blue Anodised Titanium hardware, these arms are designed to reduce unsprung weight while offering professional-grade strength.

Key Features

• Adjustable Caster: Provides the range needed to dial in optimal front-end geometry for track or spirited street use.
• Eliminate Bushing Flex: Hardened JMX Teflon-lined spherical bearings replace rubber for consistent, maintenance-free operation.
• Anti-Dive Tuning: Includes stainless steel spacers to adjust the height of the rod and tune anti-dive characteristics.
• Weight Optimised: Billet 2024 aluminium hex rods are gun-drilled to reduce unsprung weight without sacrificing stiffness.
• Rotating Clamp Design: SPL's exclusive 360-degree 6061-T6 aluminium clamps allow for rapid, precise adjustment without jam nuts.
• Titanium Hardware: Blue Anodised Titanium socket head cap screws and ASTM A574 bolts ensure maximum tensile strength (170,000 psi).

Specifications

• Link Material: Gun-drilled 2024 Aluminium
• Clamp Material: 6061-T6 Aluminium
• Hardware: Blue Anodised Titanium / Stainless Steel Spacers
• Bearing Type: Hardened JMX PTFE-lined FK Rod Ends (-54°C to 163°C range)
• Position: Front Tension Rod
• Quantity: Sold as a Pair

Vehicle Fitment

• BMW 1 Series / 1M (E82 / E88)
• BMW 3 Series / M3 (E90 / E92 / E93)
• BMW Z4 (E85 / E86 / E89)
• BMW M2 / M2 Competition / M2 CS (F87)
• BMW M3 (F80)
• BMW M4 (F82 / F83)

What's In The Box?

• 2x SPL Parts Front Tension Rods (LH & RH)
• Stainless Steel Anti-Dive Spacers
• Titanium Adjustment Hardware

Note: Professional installation and a comprehensive wheel alignment are required to properly set caster and anti-dive settings.