BMW 3 Series G20.
The coilover guide.
Shop the coiloversSet the stance for the wheels and roads you use. Separate the G20 Saloon from the G21 Touring and the M3 models, then match the kit to the engine, driven wheels and damper equipment.
The G20 brought a larger body and more powertrain choices
A G20 on well-chosen wheels needs room to work as well as a lower arch gap. Before choosing suspension, record the wheel width, offset and tyre size, identify the factory dampers and check the actual front strut diameter where the kit requires it.
The G21 estate, plug-in hybrids and xDrive cars have specific applications. G80 and G81 are M3 models with their own references. The choices below narrow the listed products; the engine, axle ratings and equipment still need to match the exact part.
BMW unveiled the seventh-generation 3 Series Saloon in Paris in October 2018, with cars reaching the road in spring 2019. The G20 grew in size and its wheelbase increased by 41 mm. The Touring followed in 2019, giving the range its estate body alongside the Saloon.
The engine range expanded to include the 330e plug-in hybrid and six-cylinder M340i models. Their powertrains and axle ratings give the suspension maker different applications to cover. Check the complete engine designation, including any hybrid system, before selecting the part.
BMW revealed the G80 M3 in 2020, ahead of its 2021 market launch. The first G81 M3 Touring arrived in 2022 as a Competition model with M xDrive. Both need M3-specific suspension references; ordinary Touring kits do not become G81 applications because a catalogue title groups the body codes together.
The 3 Series received its curved-display facelift in 2022. Further changes followed in 2024, including updates to plug-in hybrid models and chassis tuning. Match the build date to the current kit application. A road-going Touring carrying passengers and luggage needs that load considered when its height is set; a developed circuit car needs its tyre and alignment plans agreed before choosing the suspension specification.
Start with your 3 Series G20.
Match the model year, engine and body style before comparing brands.
G20 Saloon
Confirm the engine, RWD or xDrive and factory damping equipment. BC separates the 50 mm RWD, plug-in hybrid and AWD references. Eibach gives engine and axle-load limits for each part. The listed TEIN FLEX Z names particular RWD grades, so its G20 heading does not approve every engine.
See G20 Saloon kits
G21 Touring
Start with a Touring application and the actual engine and driven wheels. BC has dedicated RWD/AWD references; Eibach distinguishes rear axle limits, engines and electronic-damper conditions. Allow for the load the estate carries when agreeing usable ride height.
See G21 Touring kits
G80 M3 Saloon
Use an M3-specific reference and confirm RWD or Competition xDrive. AST and MOTON have different drivetrain codes and rear arrangements. The dedicated Nitron 032 listings name Competition xDrive; the shared 029 listings need an application check despite their broad G80 heading. Agree how the original electronic damping will be handled.
See G80 M3 kits
G81 M3 Touring
BMW launched the G81 with M xDrive. Use the dedicated M3 Touring xDrive references and check build date, hardware and electronic-damper requirements. Ask us to resolve a supplier entry that calls the car RWD or gives an earlier date before choosing that part.
See G81 M3 Touring kitsCheck your G20-era application
For an import, changed running gear, a conflicting supplier reference or an uncertain engine and axle-load match, give us the build details and existing part numbers. A registration lookup cannot identify replacement suspension hardware.
Ask about my carWhat do you want
from the car?
Road miles, circuit weekends or a car built around the lap. Start with how you drive.
Keep a useful working height for the roads and entrances you use.
Read the buying advice
For a RWD G20 330i with the required 50 mm front strut confirmed, BC I-96 BR-RA is a specific option. This configuration lists front pillowball and rear rubber mounts. Discuss noise, the existing damping equipment and wheel clearance with the fitter before choosing the specification.
- RWD 330i and 50 mm strut check
- Front pillowball / rear rubber mounts
- Agree everyday clearance
Choose a setup you can use between events and learn the adjuster methodically.
Read the buying advice
AST ACT-B2021SD is listed for the RWD G20 330i and keeps the spring separate from the rear damper. Its rebound adjustment gives you a setting to record and revisit. Confirm the supplied mounts and spring specification, resolve any electronic-damper requirements and agree an alignment for the tyres on the car.
- Exact ACT-B2021SD application
- Separate rear spring arrangement
- Record tyre and damping changes
Plan the rear conversion and the time needed to use three-way adjustment.
Read the buying advice
AST RAC-B2022SD is the listed three-way motorsport option for this RWD 330i application. The manufacturer table identifies a combined rear coilover arrangement. Have a chassis specialist confirm the changed spring load path, mounting requirements and supporting work before choosing it. Agree reservoir routing and a setup programme suited to the tyres and intended use.
- Exact RAC-B2022SD application
- Rear coilover conversion checks
- Plan reservoir routing and setup
The factory rear spring sits beside the damper.
On a standard BMW G20, the rear spring and shock absorber are mounted separately.
Layout only. Mounts and spring seats vary by kit.The G20 factory-style arrangement places the rear coil spring in its own seat, beside the damper. A height-adjustable kit can keep that arrangement, with the spring seat setting rear height. Calling the complete kit coilovers does not mean that the rear spring surrounds the damper.
The G80 M3 also has a separate spring and damper in its standard rear arrangement. Some listed kits offer a combined rear coilover instead. That moves the spring load to different mounting points, so confirm the exact conversion hardware, structural requirements and installation plan with the kit maker and chassis specialist.
Choose the manufacturer reference for the actual car before deciding the rear configuration. Front-axle lift, electronic damping and spring position are separate specifications. A fault-suppression module does not preserve the original electronically controlled damping.
Understand rear height and preload
Bring the wheel specification to the fitting discussion
Give the fitter wheel widths, offsets and tyre sizes, plus any spacers or brake changes. Check clearance inside the wheel as well as around the arch, through steering movement and suspension travel.
Identify factory electronic dampers and inspect the existing mounts and joints before booking the job. Agree the final height with the car’s normal load in mind, then arrange alignment after fitting.
Wheel width and usable travel
A wheel that clears the arch at rest can still contact it when loaded or steering. Check the inner rim and tyre against the strut and spring seat as well. Include spacers and brake changes in the specification given to the fitter.
Hybrid and xDrive applications
Confirm the full engine designation, driven wheels and axle ratings. A plug-in hybrid has its own application questions; an M340i mild-hybrid description is not interchangeable with a 330e listing. Match the current manufacturer row rather than a broad model heading.
Factory damper controls
Identify the existing electronic equipment and the treatment required by the exact kit. Some Eibach references here include Pro-Tronic fault suppression, while others exclude electronic dampers. Suppressing a warning does not retain adaptive damping.
Mounts, rear conversion and alignment
Inspect mounts and joints before fitting. A combined rear coilover conversion needs a specific hardware and load-path assessment. Agree a usable height, alignment and access to the adjusters, and record the initial settings before making changes.
The current 3 Series G20 range.
Compare the controls and hardware included in each range.
Separate ordinary G20 Saloon, G21 Touring and G80/G81 M3 references. Check RWD, xDrive, plug-in hybrid and front strut diameter where specified. Rear-integrated alternatives have their own codes; the G81 RWD/date conflicts remain application checks.
View BC Racing 3 Series G20 kits
The applications distinguish RWD/xDrive and factory-style separate rear springs from combined rear coilovers. Compare the exact part, damping adjustment and mounts. Ask for the supplied specification to be confirmed where the series title or engine description conflicts.
View AST 3 Series G20 kits
The references in this guide are M3-family applications. Separate RWD from xDrive, then confirm the rear coilover conversion, mounts, reservoirs and setup requirements. These entries do not establish ordinary G20 or G21 compatibility.
View MOTON 3 Series G20 kits
The listed VSGH8-C1AA3 FLEX Z names particular RWD G20 Saloon grades and combined damping adjustment. Confirm the exact grade and mounting requirements, including the front service-hole cover work. EDFC is a separate option; the listing does not establish BMW adaptive-damper retention.
View TEIN 3 Series G20 kits
The 045-series Pro-Street S entries separate Saloon/Touring, engines, axle limits, drivetrain and electronic-damper equipment. Some include Pro-Tronic. A G20/G80 or G21/G81 table heading does not turn the ordinary-engine rows into M3 applications.
View Eibach 3 Series G20 kits
Dedicated 032 R1/R3 entries name G80 M3 Competition xDrive, with rear spring choices and separate FAL variants. R1 has combined damping control; R3 separates rebound and compression adjustments. Confirm the exact car for a shared 029 listing and agree the treatment of the factory electronic dampers separately from front-axle lift.
View Nitron 3 Series G20 kitsFind your 3 Series G20 coilovers.
Prices include UK VAT. Choose an application and brand, then open a kit for its current options and availability.
65 listings
Match the engine, body style and axle-load limits on the product page before ordering.
AST · ACU-B2114SD
AST 5100 Street Coilovers for BMW Applications - ACU-B2114SD
G80 M3 Saloon / G81 M3 Touring
Nitron · NTCBM032R1_
Nitron BMW 3 (G80) xDrive, 4 (G82) xDrive R1 Coilover Suspension Kit
G80 M3 Saloon
Eibach · PSS65-20-045-03-22
Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-03-22
G20 Saloon
TEIN · VSGH8-C1AA3
TEIN FLEX Z Coilovers for BMW 3 Series Saloon G20 - VSGH8-C1AA3
G20 Saloon
![BC Racing Coilovers - BMW M3/M4 Competition (AWD) (21+) [G80/G82]](/images/09cf8cd191b679-480.webp)
BC Racing · BCR-I-109
BC Racing Coilovers - BMW M3/M4 Competition (AWD) (21+) [G80/G82]
G80 M3 Saloon
MOTON · M 505 186SD
MOTON 3-Way Motorsport Coilovers for BMW Applications - M 505 186SD
G80 M3 Saloon
All 3 Series G20 kit links and part numbers
- BC Racing · BCR-I-96: BC Racing Coilovers - BMW 3 Series (50mm Strut) (19+) [G20]
- BC Racing · BCR-I-103: BC Racing Coilovers - BMW M2/M3/M4 (RWD) (21+) [G87/G80/G82]
- BC Racing · BCR-I-108: BC Racing Coilovers - BMW 3 Series Plug-In Hybrid (RWD) (20+) [G20]
- BC Racing · BCR-I-109: BC Racing Coilovers - BMW M3/M4 Competition (AWD) (21+) [G80/G82]
- BC Racing · BCR-I-116: BC Racing Coilovers - BMW 3 Touring/4 Gran Coupe (RWD) (19+) [G21/G26]
- BC Racing · BCR-I-128: BC Racing Coilovers - BMW 3 Series (AWD) (19+) [G20]
- BC Racing · BCR-I-134: BC Racing Coilovers - BMW M3/M4 (Rear Integrated) (RWD) (21+) [G80/G82]
- BC Racing · BCR-I-135: BC Racing Coilovers - BMW M3/M4 Competition (Rear Integrated) (AWD) (21+) [G80/G82]
- BC Racing · BCR-I-144: BC Racing Coilovers - BMW 3 Series Touring (RWD) (20+) [G81]
- BC Racing · BCR-I-145: BC Racing Coilovers - BMW 3 Series Touring (AWD) (20+) [G81]
- BC Racing · BCR-I-146: BC Racing Coilovers - BMW 3 Series True Rear (RWD) (20+) [G81]
- BC Racing · BCR-I-147: BC Racing Coilovers - BMW 3 Series True Rear (AWD) (20+) [G81]
- BC Racing · BCR-I-151: BC Racing Coilovers - BMW 3 Touring/4 Gran Coupe AWD (19+) [G21/G26]
- AST · ACC-B2022SD: AST 5100 Clubracing Coilovers for BMW G20 / G21 / G42 - ACC-B2022SD
- AST · ACC-B2024SD: AST 5100 Clubracing Coilovers for BMW Applications - ACC-B2024SD
- AST · ACC-B2112SD: AST 5100 Clubracing Coilovers for BMW Applications - ACC-B2112SD
- AST · ACC-B2115SD: AST 5100 Clubracing Coilovers for BMW Applications - ACC-B2115SD
- AST · ACS-B2021SD: AST 5100 Street Coilovers for BMW G20 / G21 / G42 - ACS-B2021SD
- AST · ACT-B2021SD: AST 5100 Street Performance Coilovers for BMW G20 / G21 / G42 - ACT-B2021SD
- AST · ACT-B2023SD: AST 5100 Street Performance Coilovers for BMW Applications - ACT-B2023SD
- AST · ACT-B2110SD: AST 5100 Street Performance Coilovers for BMW Applications - ACT-B2110SD
- AST · ACT-B2114SD: AST 5100 Street Performance Coilovers for BMW Applications - ACT-B2114SD
- AST · ACU-B2021SD: AST 5100 Street Coilovers for BMW G20 / G21 / G42 - ACU-B2021SD
- AST · ACU-B2023SD: AST 5100 Street Coilovers for BMW Applications - ACU-B2023SD
- AST · ACU-B2110SD: AST 5100 Street Coilovers for BMW Applications - ACU-B2110SD
- AST · ACU-B2114SD: AST 5100 Street Coilovers for BMW Applications - ACU-B2114SD
- AST · RAC-B2022SD: AST 5300 3-Way Motorsport Coilovers for BMW G20 / G21 / G42 - RAC-B2022SD
- AST · RAC-B2024SD: AST 5300 3-Way Motorsport Coilovers for BMW Applications - RAC-B2024SD
- AST · RAC-B2112SD: AST 5300 3-Way Motorsport Coilovers for BMW Applications - RAC-B2112SD
- AST · RAC-B2115SD: AST 5300 3-Way Motorsport Coilovers for BMW Applications - RAC-B2115SD
- AST · RIV-B2022SD: AST 5200 2-Way Motorsport Coilovers for BMW G20 / G21 / G42 - RIV-B2022SD
- AST · RIV-B2024SD: AST 5200 2-Way Motorsport Coilovers for BMW Applications - RIV-B2024SD
- AST · RIV-B2112SD: AST 5200 2-Way Motorsport Coilovers for BMW Applications - RIV-B2112SD
- AST · RIV-B2115SD: AST 5200 2-Way Motorsport Coilovers for BMW Applications - RIV-B2115SD
- MOTON · M 505 184SD: MOTON 1-Way Clubracer Coilovers for BMW Applications - M 505 184SD
- MOTON · M 505 185SD: MOTON 2-Way Motorsport Coilovers for BMW Applications - M 505 185SD
- MOTON · M 505 186SD: MOTON 3-Way Motorsport Coilovers for BMW Applications - M 505 186SD
- MOTON · M 505 187SD: MOTON 1-Way Clubracer Coilovers for BMW Applications - M 505 187SD
- MOTON · M 505 188SD: MOTON 2-Way Motorsport Coilovers for BMW Applications - M 505 188SD
- MOTON · M 505 189SD: MOTON 3-Way Motorsport Coilovers for BMW Applications - M 505 189SD
- TEIN · VSGH8-C1AA3: TEIN FLEX Z Coilovers for BMW 3 Series Saloon G20 - VSGH8-C1AA3
- Eibach · PSS65-20-045-01-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-01-22
- Eibach · PSS65-20-045-02-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-02-22
- Eibach · PSS65-20-045-03-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-03-22
- Eibach · PSS65-20-045-04-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-04-22
- Eibach · PSS65-20-045-05-22: Eibach Pro-Street S Coilover Kit for BMW 3 (G20, G80) - PSS65-20-045-05-22
- Eibach · PSS65-20-045-06-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-06-22
- Eibach · PSS65-20-045-07-22: Eibach Pro-Street S Coilover Kit for BMW 3 (G20, G80) - PSS65-20-045-07-22
- Eibach · PSS65-20-045-08-22: Eibach Pro-Street S Coilover Kit for BMW 3 (G20, G80) - PSS65-20-045-08-22
- Eibach · PSS65-20-045-09-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-09-22
- Eibach · PSS65-20-045-10-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-10-22
- Eibach · PSS65-20-045-11-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-11-22
- Eibach · PSS65-20-045-12-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-12-22
- Eibach · PSS65-20-045-13-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-13-22
- Eibach · PSS65-20-045-14-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-14-22
- Eibach · PSS65-20-045-15-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-15-22
- Eibach · PSS65-20-045-16-22: Eibach Pro-Street S Coilover Kit for BMW applications - PSS65-20-045-16-22
- Nitron · NTCBM029R3+FAL_: Nitron BMW 2 (G87), 3 (G80), 4 (G82) R3 with FAL Coilover Suspension Kit
- Nitron · NTCBM029R3_: Nitron BMW 2 (G87), 3 (G80), 4 (G82) R3 Coilover Suspension Kit
- Nitron · NTCBM029R1+FAL_: Nitron BMW 2 (G87), 3 (G80), 4 (G82) R1 with FAL Coilover Suspension Kit
- Nitron · NTCBM029R1_: Nitron BMW 2 (G87), 3 (G80), 4 (G82) R1 Coilover Suspension Kit
- Nitron · NTCBM032R3+FAL_: Nitron BMW 3 (G80) xDrive, 4 (G82) xDrive R3 with FAL Coilover Suspension Kit
- Nitron · NTCBM032R3_: Nitron BMW 3 (G80) xDrive, 4 (G82) xDrive R3 Coilover Suspension Kit
- Nitron · NTCBM032R1+FAL_: Nitron BMW 3 (G80) xDrive, 4 (G82) xDrive R1 with FAL Coilover Suspension Kit
- Nitron · NTCBM032R1_: Nitron BMW 3 (G80) xDrive, 4 (G82) xDrive R1 Coilover Suspension Kit
Before you order.
Identify your car
Confirm G20 Saloon, G21 Touring, G80 M3 or G81 M3 Touring, engine, build date and vehicle market.
Match the kit
Check RWD or xDrive, the front strut diameter where specified, axle limits and exact part markings.
Check what’s included
Identify electronic dampers, required extra parts and any rear conversion hardware before agreeing the kit.
Check your modifications
Record wheel width, offset, tyres, spacers and brake changes; agree clearance through steering and suspension travel.
Plan fitting
Agree supporting repairs, usable loaded height, alignment and supply timing with the installer.
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 BMW 3 Series G20 coilovers.
Check the details before choosing your kit.
Can a G20 Saloon kit fit a G21 Touring?
Some exact references list both bodies, including particular AST applications. Others are body-specific. Check the manufacturer row for your engine, drivetrain and axle limits; a shared 3 Series name does not approve the kit for every Saloon and Touring.
Do RWD G20 coilovers fit xDrive cars?
Use the driven wheels named for the exact reference. BC, AST and Eibach have separate RWD and xDrive applications in this range. Similar photographs or a shared year range do not establish interchangeability.
Will coilovers keep my BMW electronic damping?
That depends on the exact kit and equipment. Some applications exclude electronic dampers; some specify fault-suppression hardware. The Pro-Tronic included with particular Eibach references prevents damper-control faults but removes electronic damping. Confirm the required treatment before ordering.
Are the G20 rear spring and damper separate?
Yes. The factory-style G20 arrangement uses a spring in its own seat beside the damper. Some replacement kits keep that layout; others convert to a combined rear coilover. A conversion changes where spring forces are carried and needs its own mounting and structural checks.
Are G20 or G21 coilovers suitable for an M3?
Choose an explicit G80 or G81 M3 application. An ordinary-engine row beneath a G20/G80 or G21/G81 heading is not M3 approval. The G81 launched as an M xDrive Competition model; supplier RWD entries need confirmation.
Which coilovers should I choose for a 330e?
Use an application that explicitly includes the plug-in hybrid, then check its body, drivetrain, build date and equipment. BC lists a dedicated RWD G20 plug-in hybrid reference, and particular AST tables include 330e. Confirm the exact part and axle limits rather than substituting an ordinary petrol kit.
How low should I set my G20 or G21?
Stay within the exact kit instructions and agree a usable height for your wheel package and normal load. Check tyre and underbody clearance through suspension travel and steering, including driveway access. An advertised adjustment range is not a recommended setting for every car.
Do I need a rear coilover conversion for track days?
Track days alone do not establish that requirement. Start with the car, tyres and intended setup, and compare the exact separate-spring and combined-rear references. A combined unit needs its mounting, load path and supporting work assessed before it is selected.
Let’s talk suspension.
Find your BMW, then add the body, engine, build date, drivetrain and factory damping equipment. Include changed wheels or running gear so the exact suspension application can be checked.