How much do the BMW G20 lowering springs drop the car?

The MMX BMW G20 lowering springs lower the 330i and M340i 30mm front and rear. This is the same drop for both RWD and xDrive variants — the G20 RWD and xDrive use the same spring perch geometry, unlike some BMW chassis families where the xDrive uses a different drop figure due to drivetrain weight differences.

Are these BMW G20 lowering springs compatible with the Adaptive M damper?

Yes. The MMX G20 lowering springs are fully compatible with both the standard fixed dampers and the Adaptive M damper system available on the M340i. The progressive spring rates work within the operating range of both damper setups; no damper replacement or recalibration is needed.

Will these fit the xDrive as well as the RWD 330i and M340i?

Yes. The MMX BMW G20 lowering springs fit both RWD and xDrive variants of the G20 330i and M340i. A single spring specification covers both drivetrain variants on the G20 platform.

What is a progressive spring rate and why does it matter?

A progressive spring rate starts softer at low compression and stiffens progressively under greater load. This means the BMW G20 lowering springs feel compliant over everyday road surfaces while delivering increased stiffness and reduced body roll under cornering loads. A fixed-rate spring stiff enough for spirited driving tends to feel harsh in daily use; progressive rates avoid that trade-off.

Do these G20 lowering springs affect ride quality noticeably?

A modest increase in ride firmness over the factory setup is expected — a lower center of gravity and reduced body roll always come with some firmness trade-off. The progressive rates on the MMX BMW G20 lowering springs are tuned to keep that trade-off acceptable for daily driving, retaining compliance at lower speeds where it matters while improving chassis composure during harder driving.

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Description

MMX Lowering Springs for G20 BMW 330i and M340i (RWD and xDrive)

BMW G20 lowering springs from MMX Performance are a complete four-spring progressive-rate set for the G20 330i and M340i, lowering the vehicle 30mm front and rear to reduce wheel arch gap, lower the center of gravity, and sharpen chassis response without compromising the everyday drivability that makes the G20 platform work as a road car. The factory G20 sits high on its springs by design to accommodate a wide range of road conditions and wheel configurations. The 30mm drop brings the ride height to where the chassis geometry works best visually and dynamically, pulling the wheel into the arch for a more planted, purposeful stance. Progressive spring rates are the reason these G20 lowering springs can drop the car and still feel composed on ordinary roads: at low deflection the spring works in its softer initial range for urban comfort; under cornering loads, the rate stiffens to reduce body roll and sharpen turn-in without the harshness of a fixed-rate spring. Compatible with both RWD and xDrive G20 models, and fully compatible with the standard and Adaptive M damper systems no damper changes required. Finished in MMX metallic grey.

Features

30mm drop front and rear on G20 330i and M340i (RWD and xDrive)
Progressive spring rates for retained ride comfort at low speeds and reduced body roll under load
Lowers center of gravity for sharper turn-in and improved cornering composure
Compatible with standard G20 dampers and Adaptive M damper system
Fits RWD and xDrive models
Reduces wheel arch gap for a more aggressive, planted stance
MMX metallic grey finish for corrosion resistance and OEM+ appearance

Applications

BMW 330i: G20 | 2019-present
BMW M340i: G20 | 2019-present

Notes

Sold as a complete spring set
Images are generic; actual product may vary

Frequently Asked Questions

How much do the BMW G20 lowering springs drop the car? The MMX BMW G20 lowering springs lower the 330i and M340i 30mm front and rear. This is the same drop for both RWD and xDrive variants the G20 RWD and xDrive use the same spring perch geometry, unlike some BMW chassis families where the xDrive uses a different drop figure due to drivetrain weight differences.
Are these BMW G20 lowering springs compatible with the Adaptive M damper? Yes. The MMX G20 lowering springs are fully compatible with both the standard fixed dampers and the Adaptive M damper system available on the M340i. The progressive spring rates work within the operating range of both damper setups; no damper replacement or recalibration is needed.
Will these fit the xDrive as well as the RWD 330i and M340i? Yes. The MMX BMW G20 lowering springs fit both RWD and xDrive variants of the G20 330i and M340i. A single spring specification covers both drivetrain variants on the G20 platform.
What is a progressive spring rate and why does it matter? A progressive spring rate starts softer at low compression and stiffens progressively under greater load. This means the BMW G20 lowering springs feel compliant over everyday road surfaces while delivering increased stiffness and reduced body roll under cornering loads. A fixed-rate spring stiff enough for spirited driving tends to feel harsh in daily use; progressive rates avoid that trade-off.
Do these G20 lowering springs affect ride quality noticeably? A modest increase in ride firmness over the factory setup is expected a lower center of gravity and reduced body roll always come with some firmness trade-off. The progressive rates on the MMX BMW G20 lowering springs are tuned to keep that trade-off acceptable for daily driving, retaining compliance at lower speeds where it matters while improving chassis composure during harder driving.

About MMX Performance

MMX Performance is a UK-based specialist in performance parts for BMW and MINI vehicles, crafting high-quality upgrades that blend precision engineering, rigorous testing, and motorsport heritage. Driven by enthusiast culture, MMX designs its products in the UK and puts them through track validation to ensure durability, fitment accuracy, and on-road performance. Their catalog spans drivetrain components, spacers, hardware, and chassis enhancements, all tailored to elevate both the driving experience and visual appeal of BMW and MINI models.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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MMX Lowering Springs for G20 BMW 330i and M340i [MMR08-1101/MMR08-1102]

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MMX Lowering Springs for G20 BMW 330i and M340i (RWD and xDrive)

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