KW Coilover Kit Variant 4 (V4) Clubsport 3-Way Adjustable – BMW 1 / 3 / 4 Series (F20 / F21 / F30 / F32)

OVERVIEW

Clubsport is KW's track-biased build of the V4 damper. The hardware difference that matters is the top mount: a Clubsport kit ships with hardened race top mounts offering camber and caster adjustment as standard, where the equivalent street kit either has a rubber-isolated mount or none at all. That is what lets you actually run the static camber a track car needs instead of chasing it with control arms.

The V4 Clubsport used here is three-way — low-speed compression, high-speed compression and rebound on separate adjusters — and height adjustable across its full range. The stock damper on these cars is the constraint: factory valving is fixed, factory ride height is fixed, and the OE top mount is designed to isolate noise rather than to locate the strut precisely.

This listing covers KW's F2X/F3X V4 Clubsport, sold by drivetrain rather than by individual model: 3972020D for RWD cars, 3972020E for xDrive cars, across the M135i/M140i, M235i/M240i, 335i/340i and 435i/440i range built on the N55/B58 platform.

SPECS

• 3-way adjustable damping: independent low-speed compression, high-speed compression and rebound
• Hardened Clubsport race top mounts with camber and caster adjustment supplied as standard
• Continuously adjustable ride height
• Sold by drivetrain code (RWD / xDrive) rather than by individual model number

PARTS INCLUDED

• Front and rear KW Clubsport coilover units with matched springs
• Hardened Clubsport top mounts with camber and caster adjustment
• Mounting hardware and KW's fitting instructions

TECH RESOURCES

Additional Parts Required

• Neither part number in this listing includes a KW ESC cancellation module. KW does not publish adaptive-damper cancellation hardware for this listing's N55/B58 chassis range; contact us to confirm your car's damper equipment before ordering if unsure.
• A corner-balance and a full four-wheel alignment are required after installation. Clubsport top mounts make camber adjustable, so plan a proper corner-weight and geometry session rather than a quick toe set.

Installation

• Installation instructions (3972020D): PDF.
• Installation instructions (3972020E): PDF.
• Setup manual (3972020D / 3972020E): PDF.
• In brief: full strut-out replacement front and rear, OE top mounts discarded in favor of the Clubsport mounts, ride height set within KW's published range, then corner-balance and alignment.

Notes

• 3972020E (xDrive) — the drivetrain split is inferred from the paired 3972020D and from the V3 Clubsport 3522080E that uses the same vehicle code. Confirm the drivetrain fitment with KW before ordering.
• Fitment is published by engine family rather than by model year; confirm your car's engine code before ordering.
• Race top mounts transmit more road noise into the cabin than the OE rubber-isolated mounts. This is normal for a Clubsport kit.
• KW publishes no product image for either part number in this listing.
• Price is for the item selected only; labor is not included.

PART NUMBER

• 3972020D — V4 Clubsport, BMW F20 / F21 / F22 / F23 / F30 / F31 / F32 / F33 / F36 RWD
• 3972020E — V4 Clubsport, BMW F20 / F21 / F22 / F30 xDrive

VEHICLE APPLICATIONS