Coil Spring Audi S1 8X Sport Eibach K/Q KBA 91336 Rear N/O/S Coil Suspension Set

Coil Spring Audi S1 8X Sport Eibach K/Q KBA 91336 Rear N/O/S Coil Suspension Set is a precision-engineered suspension component designed for installation on the rear axle. Thanks to Eibach's sporty characteristics and its perfect fit for the Audi S1 8X model, the spring ensures stable handling, predictable body behavior, and reliable suspension support during both daily and dynamic driving.

Specifications and technical data

• SKU: KBA91336
• Mark: Unbranded
• Condition: Used
• OEM Part Number: KBA91336
• Substitutable numbers: KBA91336, Eibach
• Location on the vehicle: Rear
• Category: Leaf & Coil Springs

Purpose and fitment for the Audi S1 8X Sport

The presented spring belongs to the Leaf and Coil Springs category and has been configured for the rear suspension of the Audi S1 8X generation in the Sport version. The coil spring design works in tandem with the rear axle shock absorbers, providing appropriate deflection characteristics and body roll control during braking, acceleration, and cornering.

The element is part of the Eibach coil suspension set, which in practice means a sport-tuned performance, beneficial for drivers expecting more precise suspension response and better road contact while maintaining everyday comfort.

Rear spring performance characteristics

The rear spring in the Audi S1 8X Sport suspension system is responsible for:

• maintaining the proper rear ride height relative to the ground,
• controlling suspension deflection under the load of the trunk and rear seats,
• stabilizing the vehicle during rapid load changes (e.g., sudden braking, change of direction),
• effectively transferring vertical forces to the body while maintaining predictable shock absorber operation.

Thanks to Eibach's sporty characteristics, the rear spring provides a more direct suspension response, which translates into better car control during dynamic driving without excessive "floating" of the rear axle.

Condition, origin, and service application

The spring comes from the used suspension components segment, making it an attractive solution for budget repairs, replacing individual components, or restoring the car's factory characteristics after modifications. The brand specified as unbranded means that the item is not sold under a separate commercial brand but remains compliant with the parameters intended for use in the Audi S1 8X Sport with a coil spring-based rear suspension.

The product will work well both as a replacement for a damaged or worn-out spring and for correcting geometry and suspension height after previous interventions in the chassis. Replacing the rear spring is recommended especially when symptoms such as uneven body settling, knocking from the rear of the car, or impaired stability at higher speeds occur.

Benefits of using a coil spring in the rear axle

Using a coil spring in the rear suspension of the Audi S1 8X Sport brings a number of practical benefits:

• Improved handling stability – better roll control and reduced body sway.
• Consistent cooperation with shock absorbers – predictable performance of the entire suspension system.
• Possibility of restoring factory geometry – especially important after mechanical damage or intensive use.
• Reasonable repair cost – a used component allows you to optimize your service budget without sacrificing functionality.

For workshops and individual users, this means effective rear suspension repair while maintaining proper handling characteristics, which is crucial in a compact, sporty model like the Audi S1.

Expansion of the offer and service knowledge

If you are planning a comprehensive repair or upgrade of the suspension area in your Audi and need other elements from the same group, such as additional springs, leaf springs, or compatible suspension components, check out the available parts in the Unbranded Leaf and Coil Springs category.

To better plan service work and reduce vehicle downtime in the workshop, it is worth learning practical tips regarding parts logistics – more information can be found in the article No more weeks of waiting – how a wide assortment in one warehouse really shortens your car's downtime at the mechanic?.