Audi A7 C8 / 4K.
The coilover guide.
Shop the coiloversA modest drop and a good wheel choice suit the C8’s wide, low shape. Identify the front housing size, driven wheels and factory suspension before choosing the kit.
The sharper second A7
The second A7 kept the long roof and opening hatch, then added sharper body creases and a continuous rear light strip. A set of wheels can change its stance without needing a larger body kit. Keep enough clearance for the loads and journeys the car will carry.
Start underneath the car. Audi offered passive steel suspension, controlled dampers and adaptive air, with rear steering among the options. Those differences affect the replacement plan; a trim badge or drive-select screen cannot identify every fitted part.
Audi unveiled the second A7 Sportback in October 2017, ahead of its European introduction in 2018. It followed the design direction of the contemporary A8: a wider, lower grille, firmer creases over the wheels and a light strip across the tail.
The fastback still had frameless side glass and a broad opening hatch. Inside, twin touchscreens replaced much of the previous car’s physical control panel. The more angular body and lamp shapes make this type 4K generation distinct from the earlier type 4G.
Audi offered several factory suspension arrangements. The original A7 training lists standard and sport steel-spring versions, steel springs with controlled dampers, and adaptive air. Its optional four-wheel steering adds another item to identify before a suspension change.
For a modified road car, decide how much wheel and tyre it needs before settling on height. The C8’s broad flanks work with a restrained reduction in arch gap. Account for steering movement, loaded clearance and the equipment checks needed after fitting.
Start with your A7 C8 / 4K.
Match the model year, engine and body style before comparing brands.
AWD with a 48.5 mm front housing
BC S-59 names the A7 AWD, 2018 onwards, with a 48.5 mm front strut housing. Confirm the actual housing and original equipment on the car. A diameter borrowed from another A7 listing can lead to the wrong reference.
See the 48.5 mm AWD kit
AWD with a 53 mm front housing
BC S-60 is the separate 53 mm AWD reference. Eibach -028-05-22 specifies a 53 mm clamping area and names particular quattro engines. Its load limits are 1310 kg front and 1430 kg rear; keep the engine and equipment exclusions with that row.
Compare the 53 mm AWD references
Named front-wheel-drive applications
Eibach PSS65-15-028-02-22 lists an A7 Sportback row from October 2019, with named petrol and diesel engines. It excludes four-wheel drive and specifies 1175 kg front, 1280 kg rear limits and a 53 mm clamping area. Match the full reference to the car.
Check the FWD Eibach reference
Axle loads and the A7 application row
Both listed Eibach A7 references give 30–50 mm front and rear lowering. Their load limits and rear component markings differ. The same products also list A6 Avant rows with other lowering figures; use the A7 row and current certificate for this car.
Check my A7 load and kit details
Steel springs, electronics or air
Identify the fitted suspension before ordering. These Eibach rows exclude electronic suspension and levelling control. General cancellation-device advice does not remove those exclusions or establish an air-conversion approval. Record any previous conversion as well.
Check my original equipment
Other versions and changed cars
Bring the complete specification for an S7, RS7, TFSI e, import or circuit project. These regular A7 references do not establish coverage for every version. Include wheels, brakes and any changes to mounts, springs or electronic equipment.
Discuss my exact A7 buildWhat do you want
from the car?
Road miles, circuit weekends or a car built around the lap. Start with how you drive.
Keep the long-distance comfort and clearance your normal journeys need.
Read the buying advice
BC BR-RS S-59 is the current 48.5 mm AWD example. The native configuration records rubber top mounts and nominal 10 kg/mm front and rear springs. Confirm the diameter, original suspension and complete mounting-parts list before treating it as the right choice for your car.
- Confirm the front housing size
- Check the supplied mounting parts
- Keep clearance with passengers and luggage
Choose the hardware around the tyres, braking and days you plan to drive.
Read the buying advice
Tell the people preparing the car which circuit days you plan to drive and which tyres and brakes it uses. Include the driven wheels and factory controls. Agree suitable spring and damper requirements, then allow time for measured setup and inspection.
- Describe the tyres and intended events
- Agree spring and damper requirements
- Plan setup and a follow-up inspection
Work from the completed car’s weight and preparation requirements.
Read the buying advice
Supply measured vehicle weight and the full wheel, brake and mounting specification. Record previous air or electronic-damper conversions. Agree the suspension package and inspection plan for the intended events before selecting individual parts.
- Measure the completed car
- Resolve mounts and equipment changes
- Agree inspection for the intended use
A new rear axle, with separate units.
On a standard Audi A7 C8 steel-spring rear suspension, the rear spring and damper are mounted separately.
Component layout only. Mounts, dimensions and adjusters vary by kit.Audi replaced the previous A7’s trapezoidal-link rear design with a five-link axle for the type 4K. On the original steel-spring layout, the coil has its own seat beside the damper. The two components remain separate even though the link arrangement changed.
Check the chosen kit’s rear seats, height adjusters and damper mounts against its instructions. Factory adaptive air has different spring hardware. The small component diagram identifies positions; it does not establish an air conversion or prove that another Audi’s parts fit.
Understand height and spring preload
Measure the car before ordering.
Take the exact model and engine details, permitted axle loads and front housing measurement to the fitter. Have them identify the suspension already installed and compare it with the chosen kit’s complete parts list and current documents.
Confirm current supply timing before booking the car in. Include inspection, fitting and the required setup work in the plan, with the height agreed around your wheels, load and journeys.
Identify the fitted hardware
Have the workshop record the front housing size and original suspension codes. Inspect mounts, bushes and rear spring supports. Note controlled dampers, air hardware, rear steering and any previous replacement work.
Settle the wheel specification
Supply wheel width, offset, tyre size and spacer details before agreeing height. Check clearance through steering and suspension movement with the normal load. The visual result still needs usable movement beneath the arches.
Use the right measurement basis
Establish the original ride height and whether the car already has factory sport suspension. Eibach’s nominal lowering figures depend on the original specification; a car already lowered by Audi will not necessarily move down by the full quoted amount.
Book the equipment checks
Agree alignment after the final usable height is set. Have the fitter identify any affected lighting, assistance-system or rear-steering checks and include them in the work. Arrange a follow-up inspection with the fitting booking.
The current A7 C8 / 4K range.
Compare the controls and hardware included in each range.
S-59 and S-60 are separate A7 AWD references for 48.5 mm and 53 mm front housings. The retained manufacturer list names chassis 4K8, 2018 onwards, in BR-RS configuration. Current native attributes record rubber mounts and nominal 10/10 kg/mm springs. Confirm the supplied parts and exact original equipment.
View BC Racing A7 C8 / 4K kits
Pro-Street S -028-02-22 is the named FWD application; -028-05-22 names quattro engines. Both A7 rows give 30–50 mm front and rear, with different load limits and rear components. Their 53 mm housing, no-levelling and electronic-suspension exclusions remain part of the application. Check the current certificate and component markings.
View Eibach A7 C8 / 4K kitsFind your A7 C8 / 4K coilovers.
Prices include UK VAT. Choose an application and brand, then open a kit for its current options and availability.
4 listings
Match the engine, body style and axle-load limits on the product page before ordering.
![BC Racing Coilovers - Audi A7 (Strut 48.5mm) AWD (18+) [4K8]](/images/09cf8cd191b679-480.webp)
BC Racing · BCR-S-59
BC Racing Coilovers - Audi A7 (Strut 48.5mm) AWD (18+) [4K8]
AWD with a 48.5 mm front housing
Eibach · PSS65-15-028-02-22
Eibach Pro-Street S Coilover Kit for Audi applications - PSS65-15-028-02-22
Named front-wheel-drive applications
BC Racing · BCR-S-60
BC Racing Coilovers - Audi A7 (Strut 53mm) AWD (18+) [4K8]
AWD with a 53 mm front housing
Eibach · PSS65-15-028-05-22
Eibach Pro-Street S Coilover Kit for Audi applications - PSS65-15-028-05-22
AWD with a 53 mm front housing
All A7 C8 / 4K kit links and part numbers
- BC Racing · BCR-S-59: BC Racing Coilovers - Audi A7 (Strut 48.5mm) AWD (18+) [4K8]
- BC Racing · BCR-S-60: BC Racing Coilovers - Audi A7 (Strut 53mm) AWD (18+) [4K8]
- Eibach · PSS65-15-028-02-22: Eibach Pro-Street S Coilover Kit for Audi applications - PSS65-15-028-02-22
- Eibach · PSS65-15-028-05-22: Eibach Pro-Street S Coilover Kit for Audi applications - PSS65-15-028-05-22
Before you order.
Identify your car
Identify the A7 type4K, full engine, build date and driven wheels. Record the original suspension and front housing size.
Match the kit
Match the complete kit reference, A7-specific row and permitted axle loads with the current component documents.
Check what’s included
Confirm mounting parts, spring seats and adjusters. Resolve electronic or levelling exclusions and any previous conversion.
Check your modifications
Check wheel and tyre clearance through steering and suspension movement with passengers and luggage.
Plan fitting
Confirm supply timing, then book fitting, alignment and the required equipment checks at the agreed usable height.
See what the adjustments do.
Choosing coilovers for road and track
Compare the kit against your roads, tyres and setup plans before counting adjusters.
Ride height and spring preload
Understand the two adjustments before choosing a lowering range.
What spring rate tells you
Compare force and movement, read the units and choose a spring with the damper in mind.
Spring rates and top mounts
Read the front/rear figures and check which mounts come with your kit.
Questions about Audi A7 C8 / 4K coilovers.
Check the details before choosing your kit.
Which A7 does this guide cover?
The second-generation Audi A7 Sportback, commonly called C8 or type 4K, including catalogue identifiers 4KA and 4K8. BC names 2018-onwards AWD references; the current Eibach A7 rows begin in October 2019. Check the exact engine, build and equipment. The earlier type 4G has a separate guide.
How do I choose between 48.5 mm and 53 mm?
Confirm the front housing diameter on the car and compare it with the exact application documents. BC S-59 names 48.5 mm AWD, while S-60 names 53 mm AWD. Both listed Eibach references specify 53 mm in the clamping area. A model badge or registration year alone does not establish that measurement.
Are there front-wheel-drive and quattro kits?
The two current BC references name AWD. Eibach -028-02-22 lists named A7 FWD engines and excludes four-wheel drive; -028-05-22 lists named quattro engines. Match the complete engine description, axle loads and original suspension with the appropriate row.
Does a cancellation module make an electronic-suspension car eligible?
The listed Eibach A7 rows exclude electronic suspension systems and levelling control. General advice about cancellation devices does not remove those specific exclusions, establish an included module or approve an air conversion. Have the complete original-equipment and replacement plan checked.
Is the C8 rear spring still separate from the damper?
On the original steel-spring A7 type 4K layout, yes. Audi’s five-link rear drawing shows a coil in its own support beside the damper. This is a different link arrangement from the previous A7. Check the replacement kit’s rear seats and mounting parts; adaptive air needs its own checked plan.
What do the current BC BR-RS options include?
The native S-59 and S-60 configurations list rubber top mounts and nominal 10 kg/mm front and rear springs. They are distinct housing-size applications. Confirm the complete supplied parts, original components needed and fitment conditions for the chosen reference before ordering.
Will the car lower by the whole quoted amount?
Eibach states nominal figures against the original vehicle specification. Factory lowering, equipment and tolerances can change the result. Establish the car’s current setup and measurement basis, then check loaded tyre clearance before agreeing a usable height.
Let’s talk suspension.
Find your A7, then include its engine, driven wheels, axle loads and front housing size. Tell us about the suspension already fitted and the wheel package so the exact application can be checked.