Why is the drop asymmetric on the BMW M135i lowering springs?

The F40 M135i has more front wheel gap than rear from the factory, creating a nose-up rake that looks mismatched with the car's performance character. The MMX BMW M135i lowering springs use a 25mm front and 20mm rear drop specifically to eliminate that rake and give the car a balanced, level stance rather than simply lowering it uniformly.

Are the BMW M135i lowering springs compatible with the Adaptive M damper?

Yes. The BMW M135i lowering springs are engineered to work with both static OEM and Adaptive M dampers, keeping every drive mode fully usable after installation with no recalibration required.

Will the BMW M135i lowering springs make the ride harsh?

No. The progressive spring design retains low-speed compliance for everyday comfort while firming up progressively under load, so the car feels more composed in dynamic driving without becoming punishing on imperfect roads.

Do the BMW M135i lowering springs require new dampers?

No. This is a pure spring-only upgrade that replaces the factory springs at the existing mounting points with no damper changes, no modifications, and no additional hardware required.

How much improvement in handling does a 25mm drop actually deliver?

Lowering the center of gravity by 25mm front and 20mm rear meaningfully reduces body roll in corners and sharpens turn-in response, as the car's mass shifts less during direction changes. Combined with the progressive spring rates, the BMW M135i lowering springs improve mid-corner stability and overall agility while retaining the compliance the F40 platform is known for at everyday speeds.

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Description

MMX Lowering Springs for F40 BMW M135i

BMW M135i lowering springs from MMX Performance deliver the ideal balance of improved handling, refined aesthetics, and everyday ride comfort for the F40 M135i (2020-2024). The factory M135i carries a noticeable nose-up rake from the factory, with more front wheel gap than rear, which undermines the visual aggression the car’s performance intent deserves. The MMX BMW M135i lowering springs address this directly: a 25mm front drop and 20mm rear drop eliminate the factory rake, giving the car a balanced, level stance that closes up the wheel arches and lowers the center of gravity simultaneously. Carefully selected progressive spring rates enhance dynamic response, reducing body roll, sharpening turn-in, and improving mid-corner stability while preserving compliant ride quality at lower speeds so the car remains genuinely comfortable for daily use. Fully compatible with both static and Adaptive M dampers across all drive modes, requiring no recalibration after installation.

Features

25mm front / 20mm rear drop eliminates factory rake for a balanced, level stance
Progressive spring rates for balanced ride comfort and performance
Lowers center of gravity for reduced body roll and sharper turn-in
Retains ride quality at lower speeds for everyday comfort
Compatible with static and Adaptive M dampers across all drive modes
MMX grey corrosion-resistant finish

Applications

BMW M135i: F40 | 2020-2024

Notes

Sold as a complete four-corner set (two front and two rear springs)
Images are generic; actual product may vary

Frequently Asked Questions

Why is the drop asymmetric on the BMW M135i lowering springs? The F40 M135i has more front wheel gap than rear from the factory, creating a nose-up rake that looks mismatched with the car’s performance character. The MMX BMW M135i lowering springs use a 25mm front and 20mm rear drop specifically to eliminate that rake and give the car a balanced, level stance rather than simply lowering it uniformly.
Are the BMW M135i lowering springs compatible with the Adaptive M damper? Yes. The BMW M135i lowering springs are engineered to work with both static OEM and Adaptive M dampers, keeping every drive mode fully usable after installation with no recalibration required.
Will the BMW M135i lowering springs make the ride harsh? No. The progressive spring design retains low-speed compliance for everyday comfort while firming up progressively under load, so the car feels more composed in dynamic driving without becoming punishing on imperfect roads.
Do the BMW M135i lowering springs require new dampers? No. This is a pure spring-only upgrade that replaces the factory springs at the existing mounting points with no damper changes, no modifications, and no additional hardware required.
How much improvement in handling does a 25mm drop actually deliver? Lowering the center of gravity by 25mm front and 20mm rear meaningfully reduces body roll in corners and sharpens turn-in response, as the car’s mass shifts less during direction changes. Combined with the progressive spring rates, the BMW M135i lowering springs improve mid-corner stability and overall agility while retaining the compliance the F40 platform is known for at everyday speeds.

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, often putting 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 F40 BMW M135i [MMR08-0901]

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MMX Lowering Springs for F40 BMW M135i

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Frequently Asked Questions

About MMX Performance

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