KW Clubsport 2-Way Coilover Kit for BMW M135i 1 Series F20/F21 (1K2, 1K4) 2WD with Electronic Dampers 01/2015-on | Height Adjustable, Rebound & Compression Adjustable

Track-bred twin-adjustable suspension for BMW 1 Series M135i F20 F21 RWD

Unlock serious pace and confidence with this motorsport-derived, height-adjustable suspension system for the BMW M135i hatchback. Developed on the Nürburgring Nordschleife, it delivers razor-sharp steering, incredible body control and repeatable lap-after-lap performance while still being superb on fast road. If you want your F20 or F21 to turn in harder, put power down earlier and feel planted over crests and compressions, this is the upgrade enthusiasts reach for.

Vehicle suitability

• BMW 1 Series M135i F20 and F21
• Rear-wheel drive models only
• Chassis codes 1K2 and 1K4
• For cars fitted with factory electronic shock absorbers
• Model year 01/2015 onwards

Ride height adjustment

• Front lowering: 25 to 50 mm
• Rear lowering: 30 to 55 mm

Permissible axle loads

• Front: 921 to 1090 kg
• Rear: up to 1230 kg

Why choose this setup for your M135i

• Separate bump and rebound tuning for proper chassis balance on road and circuit
• 16 clicks of rebound to dial in support, stability and ride composure
• 12 clicks of low-speed compression to suit different tyres, wheels and surface grip
• Ride height adjustment for stance, geometry and centre of gravity optimisation
• Corrosion-resistant stainless construction designed for long-term UK use
• High quality, maintenance-free components with documentation for the tested adjustment range
• May include adjustable top mounts on certain applications

Real-world gains

We have installed and set up this kit on multiple BMW M135i builds and it transforms the platform. Expect crisper turn-in, reduced roll, stronger traction on corner exit and far more confidence under hard braking. Our customers consistently report faster sector times and a more connected, communicative drive without ruining daily usability.

Who it suits

Perfect for drivers who split their time between fast B-roads and track days, plus club-level events like sprints and hill climbs. If you want a double-adjustable damper and spring package that handles heat, heavy braking zones and kerb strikes yet remains composed on the commute, this is the sweet spot.

Installation and setup

Professional fitting, alignment and corner weighting will maximise the benefit of the independent adjusters. Book your installation with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote and setup advice for road, track or mixed use.

Search terms and related queries

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