KW Variant 2 (V2) Coilovers for BMW 1 Series M135i/M140i (F20/F21) xDrive 4WD Non-EDC (1K2/1K4) - Rebound Adjustable Inox-Line Height Adjustable Suspension Kit

Premium adjustable suspension for BMW 1 Series M135i and M140i F20 F21 AWD without factory adaptive damping

Unlock sharper steering, confident road holding and a purposeful stance with the KW Variant 2 stainless steel damper and spring kit. Tailored specifically for the BMW 1 Series hot hatch platform in all-wheel drive form, this V2 package delivers precise rebound tuning and user-friendly ride height control for everyday road use, spirited B-road blasts and the odd track session.

We run this setup ourselves and our customers consistently report a big step up in control, composure and comfort compared with tired OE hardware or generic lowering springs. Expect a more planted front end, reduced pitch and roll, smoother body control on undulating British roads and a far cleaner look without sacrificing daily drivability.

Fitment and vehicle details

• BMW 1 Series M135i and M140i
• Chassis codes: F20 and F21
• Drive type: xDrive four wheel drive
• For cars without electronic damping control EDC
• Model identifiers: 1K2 and 1K4

Ride height adjustment range

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

Approved axle loads

• Front axle: 1001 to 1020 kg
• Rear axle: up to 1120 kg

What makes the V2 package stand out

• 16-click rebound control to fine tune comfort and body control
• Stainless steel bodies for outstanding corrosion resistance and long-term height adjustability
• Vehicle-specific twin-tube damper valving for the F20 and F21 AWD platform
• Continuously adjustable ride height within the tested range
• Complete, ready-to-install kit with comprehensive documentation
• Durable components engineered for year-round UK road conditions
• Struts remain rust free to keep collars moving freely over time

How it transforms your 1 Series

Dial in rebound with the simple top-mounted adjuster to suit your driving. Wind on firmness for fast A-road work and track days, or back it off for motorway comfort and rough urban routes. Rebound adjustment tightens body control, calms secondary movements, improves high-speed stability and keeps the chassis settled over crests and compressions. Upgrading to wider wheels and tyres later? The V2 makes it easy to re-balance your setup to match.

Proven performance and quality

KW develops each application with a bespoke damper curve and validates it on the Nordschleife and at the KW 7-post rig. The result is a genuine handling upgrade that is easy to live with on the daily commute. Manufactured under strict quality processes, backed by a 2-year warranty that can be extended to 5 years when installed by a KW specialist dealer, and tested extensively for corrosion resistance so adjustment remains smooth for years.

Professional installation

Want it fitted correctly first time with a fast turnaround and alignment options? Book your install with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

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