XYZ Racing Drag Racing Coilovers — Audi A4 B9 AVANT φ49 (Cancellation Kit for Electronic Damping) 2016-2026

The B9 A4 Avant’s quattro system runs a rear-biased Torsen split at rest, sending more drive to the back axle before shifting forward as load demands – which makes what the rear suspension does under full-throttle launch matter as much as anything happening up front. XYZ Racing’s Drag Racing coilover is built around that exact moment: a 0-400m sprint start, where getting the driven tyres to bite before the car finishes settling onto its suspension is what separates a clean run from a wasted one.

This particular kit is specced for A4 B9 Avants that left the factory with Audi’s electronically controlled dampers. The cancellation kit means the fixed-rate XYZ Racing valving takes over completely, without the car’s electronics hunting for a damper signal that’s no longer there.

What this coilover does for your 2016-2026 Audi A4 B9 Avant

The biggest change is in the first two seconds off the line. The Drag Racing valving is set up to load the driven corners faster than the standard suspension would, so the quattro system’s rear-biased launch split has a compressed, controlled platform to push against instead of an axle still finding its travel. Wheelspin drops because the tyre is working against a tighter setup rather than a soft one still settling. Through the rest of the pass – out past 200m and into the second half of a 400m run – the fixed damping keeps the Avant’s extra rear-body mass under control rather than letting it float, which is the difference between a car that tracks straight at speed and one that starts to wander down the strip.

About the Drag Racing coilover

XYZ’s Drag Racing line is built for one job: 0-400m sprint starts, across front-, rear- or four-wheel-drive platforms. The valving is calibrated to shift weight between the front and rear axles the instant the car is put under load, pressing the driven wheels – all four, in the A4’s case – into the road harder and faster than a standard damper allows. That extra compression on the driven tyres cuts the amount of time the wheel spends spinning before it finds grip, which is the single biggest variable in a repeatable 0-400m time. Once the car’s up to speed, the same damping keeps the chassis settled instead of letting it float through the back half of the run.

Fitment for the Audi A4 B9 Avant (2016-2026)

Built for the B9-generation Audi A4 Avant, chassis code AU22-3-C, across the 2016-2026 production run. This is the variant for cars fitted with Audi’s electronically controlled dampers from the factory – the cancellation kit is included so the fixed-rate coilover replaces that system cleanly, without a fault code or warning light left behind on the dash.

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Every A4 B9 Avant drag build is set up differently depending on how the car launches – pick your spec below.