KYB Rear Strut Boot, Jounce Bumper, and Bellows

2002–2004 Audi A4 / 2007–2008 Audi RS4 / 2008–2009 Audi TT (Excluding Quattro)

Part #: SB124

Overview

The KYB Rear Strut Boot, Jounce Bumper, and Bellows are essential replacement components designed to restore the integrity of your vehicle's suspension system. Specifically engineered for select Audi models, these parts help protect vital suspension elements from dirt, debris, and moisture, ensuring optimal performance and longevity. If your vehicle's original boots or bump stops are worn out, cracked, or missing, replacing them with high-quality KYB components is a simple and effective way to maintain ride quality and suspension reliability.

Designed for enthusiasts and daily drivers alike, these boots and bumpers help support smooth handling, reduce noise, and prevent premature wear of suspension components. Since they are easy to install and require minimal tools, they are perfect for DIY enthusiasts or professional mechanics looking to keep their Audi in top condition without extensive labor or cost.

Key Features

KYB's Rear Strut Boot, Jounce Bumper, and Bellows are crafted with durability and performance in mind. Here are some of the key features that make these parts a smart choice for your vehicle:

• Manufactured by KYB, a trusted name in suspension technology, ensuring high-quality materials and precise fitment.
• Made from durable rubber and synthetic materials that resist cracking, tearing, and deterioration caused by exposure to the elements.
• Designed to fit specific Audi models, including the A4 (02-04), RS4 (07-08), and TT (08-09, excluding Quattro), ensuring a perfect fit and seal.
• Protects the strut and shock absorber shafts from dirt, water, and debris, which can cause corrosion and reduce suspension performance.
• Serves as a cushion to absorb impacts and vibrations, helping to maintain ride comfort and handling precision.
• Easy to install during routine suspension maintenance or when replacing worn-out components, saving time and labor costs.
• Designed to work seamlessly with existing KYB or OEM suspension parts, maintaining factory-like performance.

Construction & Design

These boots and bumpers are constructed from high-quality rubber compounds that provide excellent resistance to weathering, oil, and road salts. The bellows feature a flexible, accordion-style design that allows for movement and expansion as suspension components articulate. The jounce bumpers are engineered to absorb shock and prevent metal-to-metal contact, reducing noise and protecting your suspension from impact damage. The overall design ensures a snug fit around the strut assembly, maintaining a tight seal that prevents contaminants from entering and causing corrosion or wear.

Installation & Fitment

Installing the KYB Rear Strut Boot, Jounce Bumper, and Bellows is straightforward and can typically be completed with basic hand tools. Since these parts are designed to replace the original boots and bump stops, they fit directly onto the existing suspension components without the need for modifications. During a suspension service or when replacing struts, it's common practice to inspect and replace these boots if they are damaged or deteriorated. No cutting, drilling, or complex adjustments are required, making this an ideal upgrade or maintenance step for your vehicle.

• Simply remove the worn or damaged boots and bumpers from your suspension assembly.
• Slip the new KYB boots and bumpers onto the strut shafts, ensuring they seat properly in their designated positions.
• Reassemble the suspension components and test drive to confirm proper installation and function.

What's Included

• Complete set of rear strut boots, jounce bumpers, and bellows tailored for specific Audi models listed.
• All necessary hardware and components for a secure fit.
• Installation instructions (if provided or available from KYB).

Ideal For

• Owners of Audi A4 (02-04), RS4 (07-08), and TT (08-09, excluding Quattro) seeking to restore suspension protection.
• DIY enthusiasts performing suspension maintenance or repairs.
• Professionals looking for reliable, OEM-quality replacement parts to ensure vehicle longevity and performance.

Emissions Note

This product is designed for use on vehicles in regions where emissions compliance is not affected. Please verify local regulations before installation if applicable.