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Audi A6, S6, RS6 and allroad Coilovers

Say you're shopping for Audi A6 coilovers for a 2008 Avant quattro. Before you look at brand or price, find out whether it has air suspension or self-leveling. We carry twenty-nine kits for the C5, C6 and C7, including the S6, RS6 and allroad.

Not sure what suspension your A6 has? Call 1-800-460-9106 with your VIN and we will check.

Gray Audi A6 quattro sedan lowered on coilovers in a ski chalet driveway in winter
Audi's big sedan and wagon
The A6 family

Animated illustration. It shows where coilovers sit on a car, not your exact kit. Depending on the car and the kit, coilovers can lean forward or back or stand straight up, and some cars use a separate spring and shock in the rear. Your ride height depends on the kit and how it is set up.

Which A6 generation is in your garage?

Air, self-leveling and body: what to check on an A6

These three answers quickly narrow down which kits fit.

Air or self-leveling

Many Bilstein kits and the Solo-Werks kit are not made for cars with air or self-leveling. Call us about the allroad kit.

Sedan or Avant

KW sells C6 sedan and Avant kits separately.

Front drive or quattro

BC and KW have separate C5 kits for each.

BC Racing coilovers for the A6 family

Six BC kits, C5 to C7

BC Racing's series for the Audi A6, S6, RS6 and allroad are BR, DS and ER. Free shipping on BC Racing kits in the continental US. ER comes only on the 1999 to 2004 A6 AWD kit, and BC has no RS6 kit.

See all BC Racing coilovers Go to the earliest cars

BR, DS and ER for the big Audi

Here is what each BC series does on the A6.

BR

BC Racing BR coilovers have one thirty-click knob that sets compression and rebound together.

DS

DS has the same knob as BR, plus a firmer, digressive piston.

ER

ER is an upright shock with an external oil reservoir; compression and rebound adjust separately, 30 clicks each.

Bilstein, KW, Ksport and Solo-Werks

Here is what each brand makes for the A6. Call 1-800-460-9106 and we will compare them with you.

Bilstein

Bilstein has twelve B12 and B14 kits, named by air, self-leveling, engine and body.

KW

KW has seven kits: C5 FWD and quattro, C6 sedan, Avant and S6, C7 sedan, and the RS6.

Ksport and Solo-Werks

Ksport has three kits, and Solo-Werks has one C7 kit for non-air cars.

Three example cars and their kits

2008 A6 Avant quattro, steel springs, no self-leveling

Look at the kits named for the Avant.

Kits to look at: KW A6 (C6/4F) Avant, Bilstein 2006-2008 A6 Quattro Avant B12, Bilstein A6 Quattro (Also Fits 06-11 Avant) B14
2002 A6 quattro sedan

Look at the C5 quattro kits.

Kits to look at: BC 1999-2004 A6 AWD, KW A6, S6 (C5/4B) Quattro, Bilstein 1998-2004 A6 Quattro B14
2015 A6 sedan, no air ride

Look at the C7 kits.

Kits to look at: BC A6 Sedan 2WD/AWD, KW A6 (C7/4G) Sedan, Solo-Werks A6 Non-Air Ride, Ksport A6 (C7)

All twenty-nine Audi A6 coilover kits

The C7 comes first, then the RS6, allroad, C6 and C5. Each card shows the kit name.

Newest A6 on our list

Code: C7, 4G
Good to know: BC has two C7 kits in BR or DS: "A6 2WD/AWD" and "A6 Sedan 2WD/AWD". Call us to choose between them. KW's kit is for the sedan, FWD or quattro, all engines. Solo-Werks is named "Non-Air Ride". Ksport has a 2WD/AWD kit.

Middle generation, S6 included

Code: C6, 4F
Good to know: Air and self-leveling decide the Bilstein kit: no Bilstein C6 kit is for cars with self-leveling, and several are not for air suspension. Bilstein also has different kits by engine (V6 or V8) and body (Avant). KW has separate sedan, Avant and S6 kits. BC's A6/A6L 2WD/AWD kit comes in BR. Ksport covers 2WD four and six cylinder C6 cars.

Earliest A6s we list

Code: C5, 4B, C5S
BC Racing coilover kit for the 1999 to 2004 Audi A6
BC Racing kitThe BC Racing coilover kit listed for the 1999 to 2004 Audi A6. Photo: BC Racing.
Good to know: BC has a sedan FWD kit (BR or DS) and an AWD kit (BR, DS or ER). KW has separate FWD and quattro kits; its quattro kit includes the S6. Two early Bilstein B12 kits fit only certain chassis numbers and say "Must Reuse OEM Spring Seat". Ksport's kit is for 2WD 4 and 6 cylinder cars.

Every generation, one table

Car Years How kits differ BC Racing series
C7 A6 2012 to 2018 Air ride (Solo-Werks); body (KW); two BC kits, call us BR, DS
RS6 (C5) 2002 to 2004 Years (Bilstein) No BC kit
allroad (C5) 1999 to 2005 BC only BR, DS
C6 A6 and S6 2004 to 2011 Air and self-leveling (Bilstein); body (KW); engine (Bilstein, Ksport) BR
C5 A6 and S6 1998 to 2006 Drive; chassis number (Bilstein) BR, DS, ER

Before you buy: what A6 owners run into

An A6 is usually bought as a long-distance cruiser, often an Avant or an allroad doing family duty, and few of them get dropped hard. Owner reports about coilovers on these cars are scattered. What does come up often, across the C5, C6 and C7, is wear in the front arms, so plan for it when the old struts come out.

Worn front control arms
C5 to C7 A6 and S6; Audi bulletin covers 2002 to 2016 models

C5 owners report original front arms lasting about 56k to 60k miles; one got clunks from cheap replacement arms at 22k. A C7 owner traced a front clunk to a lower rear arm. Audi bulletin 2016453 covers clacking from torn front upper link bushings. Worn arms cause clunks and alignment drift that coilovers will not cure.

Before you install: Inspect all front upper and lower arms before the install, replace worn ones in pairs with good quality parts, tighten bushing bolts at ride height, and align afterward.

The A6 story

From Audi 100 to A6

Audi's 2005 release on the five millionth A6 notes: "The Audi 100 was then renamed 'Audi A6' in 1994."

  1. Neckarsulm
    The Neckarsulm plant"The Audi A6 is a key factor behind the success of Audi and the Neckarsulm plant," said Jochem Heizmann, Audi AG Member of the Board for Production, in the release.

Questions about air ride, chassis numbers and the S6

Can I fit Audi A6 coilovers on a car with air suspension or self-leveling?

Most Bilstein kits here are not for cars with self-leveling, and several are not for air suspension. Solo-Werks' C7 kit is named "Non-Air Ride". Air-sprung cars need a call before you order anything.

What do the chassis numbers on the early C5 Bilstein kits mean?

Two 1998 to 2001 B12 kit names give a chassis number range and say "Must Reuse OEM Spring Seat". Read us the VIN and we will check where your car falls.

Are there kits for the S6 and RS6?

KW lists the C5 S6 (in its quattro kit), the C6 S6 and the C5 RS6 and RS6 Plus. Bilstein lists a 2003 RS6 kit, and one C5 quattro kit that also fits 2002 to 2003 S6 Avants.

Sedan or Avant: does it matter?

On the C6, KW sells separate sedan and Avant kits, and some Bilstein kit names include the Avant. On the C7, KW's kit is for the sedan.

What BC series can an A6 take?

Most BC A6 kits come in BR or DS. The C6 kit comes in BR, and the 1999 to 2004 AWD kit comes in BR, DS or ER.

What is the BC warranty?

BC Racing North America currently lists a two-year limited warranty on full kit orders, subject to its warranty terms. KW, Bilstein, Solo-Werks and Ksport publish their own.

More Audi coilover pages

Coilover Kits by CarEvery car page. AWD, RWD or FWD: Why Drivetrain Changes the Coilover Kit You OrderWhy the drivetrain changes which kit fits your A6. Comfort and Stance on a Daily Driver: Setting Up Coilovers for BothA comfortable drop on an A6 you drive every day. How to Set Ride Height on CoiloversMeasure and set the drop on your A6. After You Lower It: Alignment Timing, Driver-Assist Calibration and Headlight AimAlignment, driver-assist and headlight checks once the A6 is lower. Audi A4 and S4Includes A4 kits that name the allroad. Audi A7, A8 and R8The A6's bigger siblings. How to install coiloversGeneral install steps. BC Racing for AudiBC's Audi kits.
We will check air, self-leveling and chassis number with you before you order Audi A6 coilovers

We answer the phone weekdays, 9 AM to 5 PM Eastern.

Call 1-800-460-9106