AST 5100 Street Coilovers for BMW M3 E46 - ACS-B1103SD
Coilover kit
£2,568.00 inc. VAT
Representative product photograph. Exact hardware varies by application.
AST 5100 Street Coilovers for BMW, Mini Applications - ACU-B1406S
£2,508.00 inc. VAT
Check the chassis, model years and kit specification below before ordering.
BMW / MINI · 116d F40 / 116i F40 / 118d F40 / 118i F40 / 120d F40 / 120d xDrive F40 / 120i F40 / 128ti F40 / 216d F44 / 218d F44 / 218i F44 / 218i F46 / 220d F44 / 220d F46 / 220d X-drive F46 / 220d xDrive F44 / 220i F44 / 220i F46 / 220i xDrive F44 / 228i F44 / 228i xDrive F44 / Cooper Clubman ALL4 F54 / Cooper Clubman F54 / Cooper Clubman JCW ALL4 F54 / Cooper Clubman S ALL4 F54 / Cooper Clubman S F54 / Cooper Countryman ALL4 F60 / Cooper Countryman F60 / Cooper Countryman JCW ALL4 F60 / Cooper Countryman S ALL4 F60 / Cooper Countryman S F60 / M135i xDrive F40 / M235i xDrive F44 / X1 18d F48 / X1 18d X-drive F48 / X1 18i F48 / X1 18i X-drive F48 / X1 20d F48 / X1 20d X-drive F48 / X1 20i F48 / X1 20i X-drive F48 / X1 25d X-drive F48 / X1 25i X-drive F48 / X1 28i F48 / X2 18d F39 / X2 18d xDrive F39 / X2 18i F39 / X2 18i xDrive F39 / X2 20d F39 / X2 20d xDrive F39 / X2 20i F39 / X2 20i xDrive F39 / X2 25d xDrive F39 / X2 28i F39 / X2 28i xDrive F39 / X2 M35i F39
Check fitment with us Delivery and final totals are calculated for your postcode at checkout.
Your kit, in detail.
Check these application specifications against your exact car and selected configuration.
Photographs are representative. Multiple values below cover different applications; they are not a guarantee for every vehicle. Confirm current availability and lead time with us.
- Damping adjustment
- 12-position rebound adjustable
- Damper design
- Monotube
- Top mounts
- Uses original equipment top mounts
- Ride height
- Ride-height adjustable
- Lead time (catalogue)
- Made to order - approximately 4 weeks
Some specifications are not listed. Check any missing detail with us.
Check the fit.
Match the chassis, years and suspension details to your car. A registration lookup cannot identify every factory option.
Kit code: ACU-B1406S. These notes come from the current product listing. Selected configurations can have different mounting parts.
Check this application with usBMW · X2 18d · F39 · 2017–2023
- Match the chassis, model, model year and drivetrain to your car. Contact us with the registration or VIN if any detail is uncertain.
- Make: BMW
- Model: X2 18d
- Chassis: F39
- Years: 2017–2023
- Drive: FWD
- Notes: —
Choosing a note here does not change the kit in your basket or confirm fitment. Check every condition in the relevant application.
Need anything else?
Controllers, mounts and cancellation modules depend on the kit and the car. We’ll check the part numbers and anything else needed before you order.
Ask us to match the parts
We’ll confirm the parts, price and availability after checking your application.
Instructions for your kit.
Use the instructions supplied with ACU-B1406S for assembly, torque values and adjustment limits.
We don’t have a linked installation PDF for this kit yet. Send us the part number and serial or lot marking to request a copy.
Request the correct instructionsYour invoice and supplied instructions record the kit you ordered. Links below show current resources, checked 2026-10-25.
AST support
Installation and setupGeneral manufacturer guidanceWarranty processManufacturer registration and conditionsAuthorised service centresManufacturer service routeGeneral guidance does not replace the instructions for your exact kit. Contact us before returning a part; warranty cover depends on the product, purchase and applicable terms.
Ask about warranty or servicingKnow what’s
under your car.
AST 5100 Street suspension kit ACU-B1406S for BMW, Mini Applications. 12-position rebound adjustable; front coilover; oem-style divorced rear. Made to order with an approximate four-week supplier lead time. Confirm exact fitment before ordering.
Product information
ACU-B1406S is a vehicle-specific AST 5100 Street suspension kit. An inverted high-pressure monotube suspension kit with rebound and ride-height adjustment. Manufacturer set description: BMW F40/F44/F45/F46/F48/F39 MINI F54/F60 5100 series NCO Vehicle applications Match the chassis, model, model year and drivetrain to your car. Contact us with the registration or VIN if any detail is uncertain. Make Model Chassis Years Drive Notes BMW X2 18d F39 2017–2023 FWD — BMW X2 18d xDrive F39 2017–2023 AWD — BMW X2 18i F39 2017–2023 FWD — BMW X2 18i xDrive F39 2017–2023 AWD — BMW X2 20d F39 2017–2023 FWD — BMW X2 20d xDrive F39 2017–2023 AWD — BMW X2 20i F39 2017–2023 FWD — BMW X2 20i xDrive F39 2017–2023 AWD — BMW X2 25d xDrive F39 2017–2023 AWD — BMW X2 28i F39 2017–2023 FWD — BMW X2 28i xDrive F39 2017–2023 AWD — BMW X2 M35i F39 2017–2023 FWD — BMW 116d F40 2019–2024 FWD — BMW 116i F40 2019–2024 FWD — BMW 118d F40 2019–2024 FWD — BMW 118i F40 2019–2024 FWD — BMW 120d F40 2019–2024 FWD — BMW 120d xDrive F40 2019–2024 AWD — BMW 120i F40 2019–2024 FWD — BMW 128ti F40 2019–2024 FWD — BMW M135i xDrive F40 2019–2024 AWD — BMW 216d F44 2019–2025 FWD — BMW 218d F44 2019–2025 FWD — BMW 218i F44 2019–2025 FWD — BMW 220d F44 2019–2025 FWD — BMW 220d xDrive F44 2019–2025 AWD — BMW 220i F44 2019–2025 FWD — BMW 220i xDrive F44 2019–2025 AWD — BMW 228i F44 2019–2025 FWD — BMW 228i xDrive F44 2019–2025 AWD — BMW M235i xDrive F44 2019–2025 AWD — BMW 218i F46 2014–2018 FWD — BMW 220d F46 2014–2018 FWD — BMW 220d X-drive F46 2014–2018 AWD — BMW 220i F46 2014–2018 FWD — BMW X1 18d F48 2014–2022 FWD — BMW X1 18d X-drive F48 2014–2022 AWD — BMW X1 18i F48 2014–2022 FWD — BMW X1 18i X-drive F48 2014–2022 AWD — BMW X1 20d F48 2014–2022 FWD — BMW X1 20d X-drive F48 2014–2022 AWD — BMW X1 20i F48 2014–2022 FWD — BMW X1 20i X-drive F48 2014–2022 AWD — BMW X1 25d X-drive F48 2014–2022 AWD — BMW X1 25i X-drive F48 2014–2022 AWD — BMW X1 28i F48 2014–2022 FWD — Mini Cooper Clubman F54 2015–2024 FWD — Mini Cooper Clubman ALL4 F54 2015–2024 AWD — Mini Cooper Clubman JCW ALL4 F54 2015–2024 AWD — Mini Cooper Clubman S F54 2015–2024 FWD — Mini Cooper Clubman S ALL4 F54 2015–2024 AWD — Mini Cooper Countryman F60 2015–2024 FWD — Mini Cooper Countryman ALL4 F60 2015–2024 AWD — Mini Cooper Countryman JCW ALL4 F60 2015–2024 AWD — Mini Cooper Countryman S F60 2015–2024 FWD — Mini Cooper Countryman S ALL4 F60 2015–2024 AWD — Setup and installation Spring rates and mounting parts are selected for the application. Have the kit installed and aligned by a suspension specialist. Check wheel, tyre and body clearance through the full steering and suspension travel, and follow the instructions supplied with the kit. Ordering and lead time This kit is made to order. The supplier currently advises an approximate four-week lead time, but this can change. Contact us before booking installation if timing is critical. Product image The official manufacturer image represents this suspension family, not this exact vehicle-specific part number. Component shapes, mounts, spring layout and supplied contents can differ by application. Current product-family information: AST x MOTON .
- Brand
- AST
- Vehicle Manufacturer
- BMW / Mini
- Vehicle Model
- 116d F40 / 116i F40 / 118d F40 / 118i F40 / 120d F40 / 120d xDrive F40 / 120i F40 / 128ti F40 / 216d F44 / 218d F44 / 218i F44 / 218i F46 / 220d F44 / 220d F46 / 220d X-drive F46 / 220d xDrive F44 / 220i F44 / 220i F46 / 220i xDrive F44 / 228i F44 / 228i xDrive F44 / Cooper Clubman ALL4 F54 / Cooper Clubman F54 / Cooper Clubman JCW ALL4 F54 / Cooper Clubman S ALL4 F54 / Cooper Clubman S F54 / Cooper Countryman ALL4 F60 / Cooper Countryman F60 / Cooper Countryman JCW ALL4 F60 / Cooper Countryman S ALL4 F60 / Cooper Countryman S F60 / M135i xDrive F40 / M235i xDrive F44 / X1 18d F48 / X1 18d X-drive F48 / X1 18i F48 / X1 18i X-drive F48 / X1 20d F48 / X1 20d X-drive F48 / X1 20i F48 / X1 20i X-drive F48 / X1 25d X-drive F48 / X1 25i X-drive F48 / X1 28i F48 / X2 18d F39 / X2 18d xDrive F39 / X2 18i F39 / X2 18i xDrive F39 / X2 20d F39 / X2 20d xDrive F39 / X2 20i F39 / X2 20i xDrive F39 / X2 25d xDrive F39 / X2 28i F39 / X2 28i xDrive F39 / X2 M35i F39
- Series
- AST 5100 Street
- Damper Adjustment
- 12-position rebound adjustable
- Damper Type
- Monotube
- Top Mount Type
- Uses original equipment top mounts
- Ride Height Adjustment
- Ride-height adjustable
- Kit Configuration
- Front coilover; OEM-style divorced rear
- Lead Time
- Made to order - approximately 4 weeks
- Fitting Position
- Front and Rear
Get to know your setup.
Buying, fitting and looking after coilovers. A few useful reads while you compare this AST kit.
Choosing coilovers for road and track
Compare the kit against your roads, tyres and setup plans before counting adjusters.
Read the guideWhat spring rate tells you
Compare force and movement, read the units and choose a spring with the damper in mind.
Read the guideDamping adjustment explained
What combined, two-way and three-way controls change.
Read the guideRide height and spring preload
Understand the two adjustments before choosing a lowering range.
Read the guideIdentify the parts on your coilovers
Use the exploded view to name the component, then send the kit code for an exact replacement check.
Read the guideAlignment after changing ride height
Set the intended height, check the geometry and keep a useful record of the result.
Read the guideKnow what you’re choosing.
The controls and parts explained, before you decide.
Compare AST rangesThis kit: AST 5100 Street
Damping adjustment
Damping controls how quickly the suspension moves. A combined control changes compression and rebound together. Separate controls let you adjust them independently. More controls mean more setup choices; they do not guarantee a better ride.
Read the illustrated guideSpring rates
A spring-rate pair normally lists front, then rear. Keep the unit shown on the kit specification: kgf/mm (often written kg/mm) and N/mm are different units. The right rate depends on the car and setup. Ask us before choosing a custom rate or changing springs.
Read the illustrated guideTop mounts
Some kits reuse the original mounts; others include rubber or pillowball mounts. Camber adjustment depends on the mount and suspension layout. Check the exact configuration rather than assuming the representative photograph shows every included part.
Read the illustrated guideElectronic / adaptive dampers
If your car has factory electronic damping, tell us before ordering. The kit may retain that function, require an additional compatible cancellation solution, or have a specific exclusion. The correct answer depends on the vehicle and exact kit.
Ride height and installation
Lowering ranges and required parts vary by application. Read the kit notes and use a qualified installer. Changes to ride height affect alignment, so ask your installer to check the setup after installation.
Read the illustrated guideParts and servicing
Identify the component before asking for a replacement. Include the kit code, serial or batch marking and affected corner. The illustration names common external parts; the exact hardware and service route depend on this kit.
Read the illustrated guideFrom other drivers.
Read the car and driving context alongside each owner’s experience.
Read or write a reviewLoading reviews…
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