AST BMW 2018+ M340 (G20) Lowering Springs 30mm drop

AST Lowering Springs (30mm Drop) – BMW M340i / M340i xDrive (G20) 2018+

Dial in the stance and sharpen the handling of your G20 M340i with AST Lowering Springs. Engineered in the Netherlands specifically for the BMW G20 platform, these springs drop your center of gravity by 30mm (approx. 1.2 inches), eliminating unsightly wheel gap while preserving the smooth, high-end ride quality you expect from a modern M Performance sedan.

Whether your M340i is daily driven or pushed on backroads, AST Lowering Springs deliver the ideal balance between aggressive visual appeal and precise dynamic performance.

Key Features & Benefits

• Aggressive 30mm Drop: Lowers both front and rear ride height evenly by 30mm (~1.2"), delivering a perfectly flushed stance over factory or aftermarket wheels.

• Progressive Spring Rate Design: Engineered to maintain daily comfort during normal cruising while stiffening up under cornering loads to reduce body roll and dive.

• Factory Shock Compatibility: Custom-tuned to work seamlessly with both standard OEM dampers and Adaptive M Suspension without causing early strut wear or error codes.

• Cold-Wound High-Tensile Steel: Manufactured using premium chrome-silicon steel on automated cold-winding machines for ultimate durability and resistance to sag over time.

• Corrosion Protection: Finished in AST’s durable powder coat coating to resist harsh road debris, salt, and weather conditions.

• Direct Bolt-On: Engineered as a direct replacement for factory springs with no custom fabrication or modifications required.

Technical Specifications

Vehicle Fitment

• 2018+ BMW M340i (G20 Sedan)

• 2018+ BMW M340i xDrive (G20 Sedan)

> Note: Fits both RWD and xDrive models equipped with standard or Adaptive M Suspension.

The items installed or applied to vehicles are intended strictly for off-road use only and track vehicles. These modifications may not comply with emissions, safety, or environmental regulations required for public road use under Environmental Regulatory Agency (ERA) laws. It is the sole responsibility of the vehicle owner or operator to ensure adherence to all applicable local, state, and federal regulations. Use on public roads may result in legal penalties or vehicle impoundment. Always verify compliance with local authorities before installation.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

If you're unsure whether a part will fit your vehicle, feel free to contact us here with your inquiry. Our helpful sales team will reach out to confirm if it's the right match for you.

We offer a flat-rate shipping fee across the continental United States. This excludes Alaska, Hawaii, and U.S. territories. For international orders, additional shipping costs will apply. Please contact us for a quote if you are outside the continental U.S.

Also, feel free to also contact us at ColoradoN5X@Gmail.Com for any other questions.

Not all items are covered by warranty. Items including warranty, will clearly state that there is warranty within the product description. Most of these items will be a standard 1-year warranty against manufacture defects. You, the customer, will be responsible for shipping and handling. We will fix/replace that item with a product that is in working condition if you meet the warranty criteria. Please note that you will be allowed ONLY 1 claim within the year for that product. ColoradoN5X is not responsible for any damage caused during the installation of our products.