Tein FS2 Coilovers BMW 4-Series Gran Coupe F36 4A20 420i 14-21

Transform your BMW F36 4 Series Gran Coupe 420i with TEIN FS2 adjustable suspension

Unlock confidence-inspiring handling, real-world comfort and precise control on British roads with the TEIN FS2 height-adjustable suspension kit for the BMW 4 Series Gran Coupe F36 420i 2014 to 2021. This premium performance shock and spring package gives you dual adjustability for compression and rebound, so you can fine tune your set-up for daily commuting, spirited B-road driving or track-day use with ease.

The FS2 features a reservoir design that increases oil capacity and improves heat management, delivering consistent damping on long drives and hard use. With a wide tuning window and vehicle-specific hardware, it is a serious upgrade for anyone seeking sharper turn-in, better body control and a composed ride on uneven UK tarmac.

Why enthusiasts choose FS2 for the F36 4 Series

• Dual-circuit adjustability: 16-step combined rebound and compression plus an additional 16-step compression-only adjuster, giving a broad range for road, fast-road and circuit set-ups.
• Reservoir-equipped design for increased oil volume and thermal stability, supporting consistent damping over extended stints.
• Hydraulic bump control reduces harshness at full compression by absorbing impact energy smoothly, limiting kickback and improving stability over big bumps and potholes.
• Strut brackets with camber correction capability on applicable fitments via eccentric hardware or sleeves, aiding wheel alignment and front-end grip.
• Vehicle-specific top mounts included for a neat, straightforward install.
• Threaded-body ride height adjustment via the spring perch, letting you lower your BMW for improved stance and centre of gravity.
• Twin-tube construction for supple low-speed ride quality with excellent control when you press on.
• Generous stroke for composed performance on rough surfaces, delivering smooth low-speed compliance and high-speed stability.
• Fully serviceable, with overhaul and revalving options available to restore or tailor damping to your preference.

Main benefits for your BMW

• Sharper steering response and reduced body roll without sacrificing comfort.
• Height adjustable suspension for the perfect road or track stance.
• Fine-tune damping to match tyres, wheels and driving style.
• Consistent performance during enthusiastic driving thanks to superior heat control.

Compatibility

BMW 4 Series Gran Coupe F36 420i, 4A20, model years 2014 to 2021.

What you get

• TEIN FS2 adjustable damper and spring kit, with model-specific mounts and brackets.
• Adjustment hardware and instructions.

Real-world results

We have installed this set-up on multiple customer cars and in our own builds. Feedback has been consistently positive, praising the ride quality on broken UK roads, improved grip, and the confidence it brings in wet and dry conditions.

Set-up tips

• Start near the middle of the available clicks, then adjust a few steps at a time to suit your route and tyres.
• Use the separate compression adjuster to control platform support and turn-in, keeping the car settled over crests and kerbs.
• Have camber set by a specialist for best tyre contact and even wear.

Professional fitting

For installation, geometry and a tailored fast-road or track alignment, we recommend booking with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

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