XYZ Racing Tarmac Rally Coilovers — Audi S4 B8 4WD (Cancellation Kit for Electronic Damping) 2008-2016

The B8 S4’s supercharged 3.0 TFSI sits well forward of the front axle, and on a sealed tarmac stage that nose-led mass is the single biggest thing working against you. The XYZ Racing Tarmac Rally coilover for the Audi S4 B8 is built to cope with that weight transfer when the road surface stops being smooth – mid-corner ridges, kerb strikes, compressions out of crests – without losing tyre contact or pitching the car onto its bump stops.

It also addresses the elephant in the room for any modified B8 S4: the factory Drive Select / electronic damping system. This kit ships with the cancellation harness needed to retire the OE adaptive setup cleanly, so the ECU stops throwing damper-fault codes once the original struts come out.

What this coilover does for your 2008-2016 Audi S4 B8 4WD (Cancellation Kit for Electronic Damping)

The Tarmac Rally valving is tuned to soak up the kind of mid-corner impact that would unsettle a circuit-focused coilover – think repaired patches, expansion joints and crested junctions taken at pace. On the road you get a settled, planted front end where the standard Audi adaptive setup tends to crash through sharp inputs. The damper resists shock body movement under hard compression, which keeps the contact patch loaded and lets the quattro driveline actually put 333bhp down out of a slow corner instead of scrabbling. Ride height is adjustable independently of preload, so you can drop the B8’s slightly raised stance without binding the spring or running out of bump travel. With the electronic damping cancellation kit in the box, the dash stays clean and the suspension behaves the way you set it, not the way Drive Select thinks it should.

About the Tarmac Rally coilover

The Tarmac Rally is XYZ Racing’s sealed-stage rally damper, distilled from the settings the company runs on its own Tarmac Rally programme. The brief is specific: absorb the jolt of large bumps and uneven pavement without the wheel deflecting off line, and effectively suppress shock body motion so the tyre stays in contact with the road surface. That bias toward compliance is what separates it from a circuit coilover – the spring rates and damping curves are picked to maintain traction when the surface is broken, rather than to keep the chassis flat over glass-smooth tarmac. Construction follows the standard XYZ pattern of height-adjustable lower mounts, monotube damper bodies and replaceable internals, so the kit can be rebuilt rather than binned when stage mileage stacks up. Settings carry over directly from XYZ’s own rally experience, which means the baseline you bolt on is already a starting point a stage driver would recognise.

Fitment for the Audi S4 B8 4WD (Cancellation Kit for Electronic Damping) (2008-2016)

This kit fits the B8-generation Audi S4 quattro saloon and Avant produced from 2008 to 2016, chassis reference AU22-1-C. The supplied cancellation harness is included specifically to retire the factory electronic damping system, so this is the correct part number for cars originally optioned with Audi Drive Select / adaptive dampers rather than the passive set-up.

What buyers also search for

• Audi S4 B8 coilovers with electronic damping delete for Drive Select cars
• B8 S4 rally suspension for broken-surface tarmac stages and fast B-roads
• Audi S4 B8 4WD coilover upgrade that keeps the quattro front end planted under load
• Tarmac rally damping for a 2008-2016 S4 without resorting to a circuit-only spring rate
• B8 S4 suspension that drops the standard ride height without killing bump travel

Pick your ride height, spring rate and damping spec in the configurator below.