Unibal Toe Link Kit Elise/Exige mit Toyota Motor

KOMO-TEC Toe-Link Kit for Lotus Elise

The KOMO-TEC Toe-Link Kit was developed to specifically reinforce a known weak point of the rear wheel guidance of various Lotus Elise models.

Under increased load – for example, from sports tires, high lateral acceleration, or regular track use – the standard toe links can reach their mechanical limits. A failure can lead to loss of tracking at the rear axle and thus to a severely uncontrollable driving condition.

The KOMO-TEC Toe-Link Kit replaces the standard linkage with a particularly stiff, precisely adjustable, and highly load-bearing construction. This significantly reduces the risk of failure while simultaneously allowing for precise adjustment of the rear axle kinematics.

Four vehicle-specific versions

The Toe-Link Kit is available in four different variants:

The versions for 2ZZ and 2ZR vehicles additionally have a connecting strut between the two inner pivot points on the chassis. This stiffens the mounting areas against each other and increases the stability of the entire rear axle construction.

The required vehicle variant must be clearly selected when ordering. A wrong version cannot be properly installed.

High-quality uniball joints from German production

The uniball joints used are manufactured in Germany and were specifically developed for use in suspension components.

The joint heads are made of forged 42CrMo4 steel and offer very high mechanical load capacity. Due to the play-free bearing, track forces can be transmitted precisely without the typical elastic deformations that occur with standard rubber bearings.

The result is a significantly more precise and consistent wheel guidance under load.

Stainless steel tubes with welded threaded inserts

For the tie rods, high-strength stainless steel tubes are used instead of simple solid rods. The threaded inserts are precisely placed into the tubes and orbital welded.

This construction combines high bending and torsional stiffness with a technically optimized component geometry. The welded threaded inserts create a robust connection to the uniball joints while allowing for precise adjustment of the track.

High-strength connecting elements

All screws in the kit meet the strength class 12.9. The connecting parts between the axle carrier and toe link are precision machined from solid aluminum.

All components are designed for high mechanical load capacity and long-term corrosion protection. This kit is suitable for both sportily used street vehicles and demanding track day and motorsport applications.

Precise adjustment of bump steer

In addition to higher operational safety, the KOMO-TEC toe link kit allows for precise adjustment of bump steer.

Bump steer refers to the change in track during compression and rebound. An unfavorable track curve can significantly affect driving behavior:

• If the loaded rear wheel goes into toe-out when compressing, the tendency to oversteer may increase.

• If the rear wheel goes into toe-in, a stabilizing effect occurs.

• At high speeds, an unfavorable setting can worsen straight-line stability.

• On uneven roads or when driving over curbs, the rear axle may feel unstable.

• During hard braking, an uncontrolled change in alignment can impair driving stability.

The play-free joints, rigid tie rods, and precise adjustability allow the alignment curve to be specifically tailored to vehicle height, suspension setup, and intended use.

Additional stiffening for 2ZZ and 2ZR

The variants for vehicles with Toyota 2ZZ and 2ZR engines are supplied with conical bolts for attachment on the wheel carrier side.

Additionally, a brace connects the two inner pivot points on the chassis. This construction increases the stiffness of the mounting areas and reduces unwanted movements under high loads.

Quality testing and road registration

The mechanical quality and load capacity of the construction have been demonstrated in a testing laboratory. Based on this, a TÜV registration for road use is generally possible.

The actual registration capability depends on the vehicle, the chosen kit version, proper installation, and other installed suspension components. The approval must be carried out by a recognized testing authority for the specific vehicle.

Advantages

• Reinforcement of a known weak point in the rear wheel guidance

• Significantly reduced failure risk compared to worn or overloaded stock parts

• More precise and predictable guidance of the rear axle

• Adjustable rear axle alignment

• Precise tuning of bump steer

• Play-free uniball joints made in Germany

• Uniball joint heads made from forged 42CrMo4

• Stainless steel tubes with welded threaded inserts

• Orbital welded pipe connections

• High-strength screws of strength class 12.9

• Connection parts machined from solid aluminum

• High bending and torsional stiffness

• Long-term corrosion protection

• Suitable for sports tires and high suspension loads

• Developed for track days and motorsport

• TÜV registration possible after technical inspection

Scope of delivery

The scope of delivery depends on the chosen vehicle variant and includes:

• Vehicle-specific toe links for the rear axle

• Uniball joints made in Germany

• Stainless steel tubes with welded threaded inserts

• Machined aluminum connection parts

• High-strength fastening elements of strength class 12.9

• Vehicle-specific connections on the wheel carrier side

• For 2ZZ and 2ZR versions: tapered pins for the wheel carriers

• For 2ZZ and 2ZR versions: additional connecting strut between the inner chassis attachment points

Important assembly and adjustment note

The toe link kit is a safety-relevant suspension component. Installation may only be carried out by a qualified specialist.

Before assembly, axle beams, wheel carriers, mounting points, and all adjacent suspension components must be checked for damage, corrosion, and dimensional accuracy.

After installation, the following are mandatory:

• Inspection of all screw connections

• Adjustment of the rear axle alignment

• Testing and adjustment of bump steer

• Complete axle measurement

• Check of clearance throughout the entire spring travel

• Re-inspection of the fastenings after the prescribed break-in distance

Only a properly installed and precisely adjusted toe-link kit can ensure the intended safety and driving precision.