Enhance the stance, handling, and driving feel of your BMW M135i with the MMX Performance Lowering Spring Kit, engineered specifically for the F40 chassis. With a carefully tuned drop of 25mm at the front and 20mm at the rear, these springs deliver sharper turn-in, reduced body roll, and a more planted, responsive feel — all while maintaining everyday comfort.
By lowering the centre of gravity, the springs unlock lighter, more agile dynamics without compromising refinement. Thanks to progressive spring rates, low-speed ride quality remains smooth, yet handling tightens up noticeably when pushing through corners. The result is a chassis that feels more direct and engaging, ideal for spirited driving.
Visually, the transformation is just as impressive. The reduced ride height removes the stock wheel arch gap, giving the M135i a level, aggressive stance that looks as though it should have come straight from the factory.
Finished in MMX metallic grey, these springs combine durability with a premium look, and are fully compatible with both static and dynamic dampers.
Key Features
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Front drop of 25mm, rear drop of 20mm
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Sharper handling and reduced body roll
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Maintains smooth ride quality with progressive spring rates
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Designed specifically for BMW M-Lite models
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Works with both static and adaptive dampers
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Premium metallic grey finish for durability
Compatibility
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BMW 1 Series F40 M135i xDrive (2019+)
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Engine: B48
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Part Number: MMR08-0901
Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.
It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.
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.
We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.
All in stock products ship the same day if ordered before 2pm GMT
For out of stock items we will contact you with an estimated wait time if not otherwise specified above.
We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy
All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.
PLEASE NOTE
- Orders with both in-stock and backorder or out-of-stock products will be dispatched once all products are available to ship together.
- Contact our sales team if you want your parts fitted to your vehicle at our London workshop.
- Shipping estimates are based on courier delivery times and don't include time to despatch from our warehouse.