KW Variant 1 Coilovers for BMW 1 Series M135i/M140i (F20/F21) xDrive 4WD - EDC Electronic Damper Compatible - Inox-Line Height Adjustable Suspension Kit - Chassis 1K2/1K4

Transform your BMW 1 Series handling and stance

Give your M135i or M140i the precision, confidence and everyday comfort it deserves with this height-adjustable stainless suspension kit. Designed specifically for F20 and F21 models with four-wheel drive and factory adaptive damping, it delivers a lower centre of gravity, sharper turn-in and a refined ride on UK roads.

What makes this upgrade special

• Pre-set damper tuning for a sporty yet compliant road feel
• Stainless strut bodies with corrosion-resistant inox technology for long service life
• Ride height adjustment to dial in your preferred stance and balance
• High quality springs, bump stops and hardware for durability
• Complete kit with full instructions for straightforward installation
• Engineered and manufactured in Germany

Lowering range

Front drop: 30 to 55 mm

Rear drop: 30 to 55 mm

Permitted axle loads

Front: 1001 to 1020 kg

Rear: up to 1120 kg

Vehicle compatibility

BMW 1 Series M135i and M140i, F20 and F21, four-wheel drive models equipped with factory electronic dampers. Chassis codes: 1K2 and 1K4.

How it improves your drive

This road-focused spring and damper package reduces body movement, improves mid-corner stability and gives a precise, confidence-inspiring steering response while retaining day-to-day comfort. The dirt-resistant trapezoid thread and composite spring seat make height adjustments quick and easy, even after years of use.

What’s in the box

• Pre-configured sport damping
• Stainless steel struts using inox-line technology
• Individually height-adjustable front and rear assemblies within the tested range
• All required mounts and components
• Comprehensive fitting documentation

Proven quality

Developed and produced in Fichtenberg, Germany. Each kit undergoes extensive testing and strict quality control. Standard warranty is 2 years across thousands of applications, with the potential to extend up to 5 years when installed by an authorised specialist.

Real-world results

We run this setup on our own builds and our customers consistently report a transformative change in balance, grip and road comfort with a premium, OEM-plus feel.

Professional fitting

For expert installation, choose MJ Modifications in Warwickshire. Request a fitting quote: info@mjmodifications.co.uk.

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