KW Variant 1 V1 Inox-Line Stainless Steel Adjustable Coilovers Suspension Lowering Kit for BMW 1 Series M135i M140i F20 F21 2WD RWD Non-EDC Non-Adaptive | Height Adjustable Shocks & Springs | Coil

KW Variant 1 Inox-Line adjustable suspension kit for BMW 1 Series M135i and M140i F20 F21 RWD without adaptive dampers

Transform your 1 Series with a premium stainless steel spring and damper package that delivers a confident stance, crisp steering and smooth ride quality. KW Variant 1 Inox-Line is the proven street performance solution for the M135i and M140i, giving precise ride height control and factory pre-set damping for hassle-free setup. Expect tighter body control, improved cornering grip and a composed, comfortable drive on British roads.

Vehicle compatibility

• BMW 1 Series M135i and M140i
• Chassis: F20 and F21
• Drive: rear wheel drive only
• Vehicles without adaptive or electronic damping
• BMW chassis codes: 1K2 and 1K4

Ride height adjustment range

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

Permissible axle loads

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

Why this kit

• Pre-set damping from the factory for balanced road comfort and sporty response
• Independent height adjustment to dial in the perfect drop within tested limits
• Inox-Line stainless damper bodies resist corrosion for long-term reliability
• Trapezoid threads and composite spring perches for easy height changes even after winters
• Car-specific springs and dampers to reduce roll, sharpen turn-in and enhance stability
• Complete package with detailed installation documentation
• Premium components engineered to exceed OEM quality

On-road results

This KW setup gives the M135i and M140i a planted feel with direct response and a refined ride. The fixed-rate damping is expertly matched to the springs, so you get fast, predictable weight transfer without harshness. Daily commute, B-road blast or long motorway run, the car feels composed and confidence inspiring even at maximum axle weights.

Built to last

• Made in Germany with rigorous quality control
• 2-year manufacturer warranty, extendable to 5 years when installed by a KW specialist dealer

Our experience

At MJ Modifications we have installed and driven these on the F20 and F21 platforms and they are superb. Owners consistently report sharper handling, reduced pitch and roll, and an excellent ride with a purposeful stance. If you want a no-nonsense, height-adjustable road setup that looks right and drives better, Variant 1 is a top choice.

Professional fitting and alignment

For installation, geometry and setup, we recommend booking with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote and advice on ride height, bump stops and alignment settings tailored to your use.

Notes

• Rear height adjusters are supplied and may sit above or below the rear spring depending on vehicle layout
• Please verify axle loads and that your car is without electronic dampers before ordering

Looking for

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