Performance M
ST Suspensions Lowering Springs 30mm Drop (30/30) - BMW 1 Series F20 F21 Hatchback 2011-on (1K2, 1K4) - Sport Coil Spring Set / Suspension Lowering Kit - Fits 120d 123d 125d Diesel - OE/Adaptive Damper Compatible
ST Suspensions Lowering Springs 30mm Drop (30/30) - BMW 1 Series F20 F21 Hatchback 2011-on (1K2, 1K4) - Sport Coil Spring Set / Suspension Lowering Kit - Fits 120d 123d 125d Diesel - OE/Adaptive Damper Compatible
Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.
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Transform your BMW 1 Series F20 F21 with ST sport springs
Give your BMW 1 Series the stance and handling it deserves. This premium ST spring set delivers an approx 30 mm front and 30 mm rear ride height drop for a cleaner look, sharper turn-in and reduced body movement, while retaining everyday comfort with your factory dampers. Precision rates are tailored specifically for the F20 and F21 chassis, including 120d, 123d and 125d diesel variants.
Engineered in high-grade chrome silicon spring steel with a durable epoxy-coated finish, these performance springs are built for UK roads and weather. They integrate seamlessly with OE shocks and are suitable for cars equipped with electronic damping systems, maintaining full functionality while tightening up chassis response.
Why enthusiasts choose this ST spring set
- Approx 30 mm front and 30 mm rear ride height reduction for a purposeful, level stance
- Noticeably flatter cornering, improved stability and more confidence on B-roads
- Vehicle-specific rates for F20 and F21 platforms to balance grip and comfort
- Works with factory dampers including adaptive systems where fitted
- High-strength chrome silicon spring steel with long-lasting epoxy protection
- Multi-stage heat treatment for consistent performance over time
- OEM-quality fit and finish for hassle-free installation
Fitment and technical details
- Chassis: BMW 1 Series F20 and F21, including body codes 1K2 and 1K4
- Models: 120d, 123d, 125d
- Model year: 2011 onwards
- Approximate drop: 30 mm front, 30 mm rear
- Approved front axle mass up to 920 kg
- Approved rear axle mass up to 1110 kg
- Engine output range covered: 120 to 160 kW
We run these on customer cars and the feedback is consistently positive: tighter handling, better road feel and a cleaner, more aggressive look without harshness. If you want a quality suspension upgrade that boosts both appearance and performance, this ST spring set is a superb choice.
Professional installation and setup
For fitting, alignment and expert advice, book in with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk. We recommend a full geometry check after installation to maximise tyre life and handling.
Important notes
- Ensure your vehicle’s axle weights are within the limits listed above
- Designed to work with standard dampers, including adaptive systems where fitted
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