KW AUDI RS4 B9 Height Adjustable Lowering Spring Kit

Get the best of both worlds with KW's Height Adjustable Lowering Springs - combining the benefits of a lowering spring with the precision of a coilover, letting you dial in your RS4 Avant's ride height exactly rather than committing to a single fixed drop. Lowering the centre of gravity sharpens handling, lifts driving dynamics, and gives the car a more sporting character on the road.

The full adjustment range is TÜV-approved in Germany, so you get genuine flexibility within a range that's been officially tested and signed off - not just a guideline. Threaded columns are made from galvanised steel for long-term durability, and the kit arrives complete and ready to install, with full documentation included for straightforward use and, where applicable, road-legal registration.

Please select your variant at checkout: this kit is available in two versions depending on your RS4's factory suspension - with DRC (adaptive electronic dampers) or without DRC (standard dampers). Selecting the correct one is essential for proper fitment.

Why Choose This Spring Kit

• Independently adjustable ride height - dial in your exact drop rather than a fixed setting
• TÜV-approved adjustment range - officially tested, not just a manufacturer estimate
• Complete, ready-to-install set - front and rear springs included
• Galvanised steel threaded columns - built for long-term durability
• Full documentation included - supports easy use and registration where required
• Available in DRC and non-DRC variants = matched to your car's factory damper setup

Compatibility & Variants

With DRC - Part Code 253100CF

• Audi RS4 Avant (B9, Quattro, 11/2017+) with factory DRC adaptive dampers
• Front lowering: 5-25mm | Rear lowering: 5-30mm
• Max axle load: Front 1225kg / Rear 1235kg

Without DRC - Part Code 253100BU

• Audi RS4 Avant (B9, Quattro, 11/2017+) with standard (non-adaptive) dampers
• Front lowering: 5-25mm | Rear lowering: 5-30mm
• Max axle load: Front 1225kg / Rear 1235kg

What's Included

• Front axle springs (height adjustable)
• Rear axle springs (height adjustable)
• Vehicle-specific bump stops with dust protection