Rear adjustable upper arms - Toyota GR Yaris

Lightweight rear adjustable control arms for the Toyota GR Yaris. Price is for a pair (per vehicle).

Technical suspension modernization: rod ends and spherical roller bearings

Traditional suspension systems use rubber bushings that can flex under stress, leading to deflection and geometry changes. Replacing these with tie rod ends and spherical roller bearings creates a stiffer control arm system, essential for motorsports and competition applications.

Technical benefits:

• Fixed geometry: Minimizes deflection to maintain precise wheel alignment under load.


• Improved handling: Reduces suspension compliance, resulting in more predictable steering response and improved cornering performance.


• Greater durability: Stiffer components better resist wear and deformation during demanding, competitive riding.


• Better feedback: Eliminates the play inherent in rubber bushings, ensuring immediate and accurate suspension response.


• Reliable load handling: Provides a more secure connection between components, which is crucial for maintaining performance under heavy loads.

Product functionality:

• Camber adjustment is extended via a turnbuckle. The adjustment range is ±15 mm, providing approximately ±4.4 degrees of camber adjustment.


• Much lighter, also with metal wishbones from other companies.


• It uses uniballs, which eliminates the flex of the rubber bushings and provides a much more direct and predictable response.


• Stiffer and stronger than the OEM part – designed to withstand track racing and rallying.


• Additional space for thicker shock absorbers.


• Supports longer shock absorber travel.

Features:

• Precision CNC machined from aluminum.


• Welded with high-strength steel.


• Black coating for a nice appearance and corrosion resistance.


• The part is supplied pre-assembled, ready for installation.


• Compatible with both OEM and Verkline subframes and posts .

What's included:

• Two aluminum wishbones


• Two pullers with super thin nuts


• Two M18 rod ends


• Two rubber end caps for the rod ends


• Two PTFE motorsport uniballs


• Printed installation instructions (7 pages)

Used in:
- Toyota GR Yaris 2020+
- Toyota GR Corolla GZEA14

Note: Installing this rear insert kit will result in additional NVH (noise, vibration and harshness) transmission into the cabin.