XYZ Racing Circuit Master Coilovers — Audi RS6 4B/C5 4WD 2002-2004

Few cars ask more of a damper than a circuit-driven C5 RS6. With 450PS of twin-turbo 4.2 V8 sat over the front axle and the better part of 1,900kg to arrest, the 4B platform loads its outer-front corner hard and holds it there through long, fast bends. The XYZ Racing Circuit Master coilover for the Audi RS6 4B/C5 4WD (2002-2004) is built for exactly that: sustained circuit lap-time work, where the suspension has to keep reading the surface while the brakes and tyres are running hot.

This is the most track-focused tier in the XYZ Racing range, and on a quattro super-saloon that left the factory leaning on its now-ageing Dynamic Ride Control hydraulics, it offers a route to proper, rebuildable damping you can actually tune. For an owner keeping a 4B on track in 2026, that matters more than ever.

What this coilover does for your 2002-2004 Audi RS6 4B/C5 4WD

Bolt the Circuit Master onto an RS6 4B and the first thing you reclaim is body control. The 9,720-way adjustment range lets you hold the nose flat under braking from three-figure speeds and meter the weight transfer that this front-biased quattro layout otherwise dumps onto its outer-front tyre mid-corner. Stiffer, rebuildable damping replaces the stock setup’s softening hydraulics, so the platform stays consistent as a session goes on and temperatures climb. Ride height is adjustable to bring the RS6’s tall standard stance down over the arches and drop the centre of gravity. The result is a heavy super-saloon that turns in cleanly and puts its 450PS down out of slow corners with far less front-end wash.

About the Circuit Master coilover

The Circuit Master sits at the competition end of the XYZ Racing line-up, developed alongside their Racing, Drift and Tarmac Rally specs and tested by XYZ racing teams across international circuits. Its headline feature is a three-knob adjustment system giving 9,720 distinct damping combinations, enough resolution to separate bump and rebound behaviour for a specific track and tyre choice. Those knobs use a small oil-passage design; over large kerbs or bumps you may hear a faint noise as oil moves through the narrow passage, which is normal and a by-product of the circuit-focused valving rather than a fault. This is hardware engineered for smooth track surfaces and the sustained loads of lap work, not for soaking up broken B-roads.

Fitment for the Audi RS6 4B/C5 4WD (2002-2004)

These coilovers are cut for the C5-generation RS6 (4B platform) in 4WD quattro form, covering the 2002-2004 production run. Confirm your car falls within that chassis and year span before ordering. Ride height and the three damping adjusters are all set on the car once the kit is fitted.

What buyers also search for

• Audi RS6 4B/C5 coilover upgrade for track-day and circuit use
• Replacing failing RS6 C5 Dynamic Ride Control with adjustable coilovers
• RS6 4WD quattro suspension that manages a nose-heavy V8 on circuit
• Height-adjustable RS6 4B coilovers for a lower stance over the arches
• 9,720-way adjustable damping for the 2002-2004 Audi RS6

Set your ride height and damping intentions for sustained circuit work, then configure your Circuit Master coilovers for the Audi RS6 4B/C5 below.