KW Variant 2 (V2) Inox-Line Stainless Coilovers Suspension Kit for BMW 1 Series F20/F21 M135i M140i xDrive AWD/4WD (EDC equipped) – Height & 16-Click Rebound Adjustable Lowering Shocks/Struts

Adjustable stainless suspension kit for BMW 1 Series M135i and M140i F20 F21 xDrive

Unlock sharper handling, a lower stance and refined ride control with this KW Variant 2 inox-line height-adjustable suspension system. Designed for BMW 1 Series hot hatch models with all wheel drive and factory adaptive damping, this spring and damper package delivers confident turn in, reduced body movement and a composed feel on British roads.

We run these units on our own builds at MJ Modifications and customer feedback has been outstanding. The easy-to-use 16-click rebound control lets you fine tune comfort and support for commuting, B-road blasts and occasional track use, especially when changing wheel and tyre sizes.

Fitment and vehicle details

• BMW 1 Series M135i and M140i
• Chassis: F20 and F21
• Drivetrain: xDrive four wheel drive
• For cars originally equipped with electronically controlled dampers
• Vehicle type references: 1K2 and 1K4

Lowering range

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

Permissible axle loads

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

Why this upgrade is a game changer

• 16-stage rebound damping adjustment for quick changes from compliant to sporty
• Independent front and rear ride height adjustment for perfect stance and centre of gravity
• Inox-line stainless struts for exceptional corrosion resistance and long-term durability
• Vehicle-specific damper tuning proven on the Nurburgring and KW 7-post test rig
• Twin-tube design for premium road manners and grip on uneven tarmac
• Complete kit with precision components for a straightforward install
• Usable, tested adjustment window for UK roads

What you will feel

Dial in firmer rebound to control weight transfer and tighten the chassis for higher corner speed, or soften it to smooth out rough surfaces and potholes. On xDrive models, traction and stability are enhanced while steering response becomes more immediate. The result is a more engaging, planted and confidence-inspiring BMW 1 Series without sacrificing day-to-day comfort.

Built to last

KW’s inox-line construction is rust free and engineered for year-round use. After extensive salt spray testing, the stainless bodies keep their height adjustability season after season. Every kit is validated to rigorous KW quality standards.

Warranty

German-engineered quality with a 2-year manufacturer warranty. Warranty can extend up to 5 years when fitted by a KW specialist dealer.

Professional fitting and setup

Maximise performance with expert installation and alignment. For fitting in Warwickshire, choose MJ Modifications. Request a quote at info@mjmodifications.co.uk.

Popular search terms

BMW M140i suspension upgrade, M135i adjustable shocks, F20 coilover suspension kit, F21 ride height adjustable kit, xDrive four wheel drive suspension package, stainless struts BMW 1 Series, rebound damping adjustable shock absorbers, KW inox suspension BMW, BMW 1 Series lowering kit UK, fast road handling package, street and track suspension, AWD BMW hatch suspension, height and rebound adjustable damper set, M Performance hatchback suspension upgrade, BMW F20 F21 stainless steel shock and spring kit, premium coilover suspension UK.