Suitable For:
- F20/F21 118d/120d/125d, 125i, M135i/M140i
Transform your BMW M135i or M140i driving experience with Birds' B-Series Sport Suspension kits, meticulously engineered to redefine ride quality and handling on the diverse roads of the UK. Featuring specially valved Bilstein shock absorbers and precisely matched springs designed by Birds, their kits offer the ultimate improvement in BMW performance.
Not happy with modern BMW suspension setups, Birds embarked on a mission to develop a solution specifically tailored for UK roads. Collaborating with former racing driver James Weaver and chassis engineer Pete Weston, they spent over 18 months refining their B-Series Sport Suspension kits.
Crafted for BMW owners seeking a fast road-car setup, the B-Series suspension combines meticulously judged road car springs with specially tuned Bilstein shock absorbers, delivering enhanced ride quality and improved body control. With additional tuning on the "additional dampers" (rear bump stops), the suspension kits provide good slow-speed ride quality and additional roll stiffness.
These kits maintain vehicle aesthetics, with no more than a 10mm lowering and are available exclusively in OE Black.
Rest assured, all Birds B-Series Suspensions come with a 24-month warranty without mileage restriction, providing peace of mind with every installation.
**If the car is originally equipped with EDC (electronic damper control/adaptive dampers), you will need a new anti-roll bar link rod for the RHF (BMW part number 31306792211), and the EDC function needs to be coded out of the car**
At Matt Lewis Racing, we are proud to be based in the UK and committed to delivering our products to customers both domestically and internationally. Our goal is to provide fast, reliable shipping that makes it easy for you to receive your order as soon as possible.
Domestic Shipping:
- We ship to all locations within the UK, including England, Scotland, Wales, and Northern Ireland
- All orders to England & Wales will be shipped via Royal Mail or FedEx
- All orders to Northern Ireland, Scotland/Scottish Highlands & Islands and the British Isles will be shipped by Royal Mail or a suitable courier service available to select at checkout
- The Royal Mail 48 shipping option typically requires 2-3 working days* for delivery, while the Royal Mail 24 service generally takes 1-2 working days* to deliver
- Some items are not stocked and do not have a 24hr postage service available. This will be noted at the bottom of the item page
International Shipping:
- We offer international shipping to most countries around the world
- International orders will be shipped via a Royal Mail Tracked service or the courier selected at checkout
- Delivery time for international orders varies based on location & shipping service, but we will provide you with a tracking number at the time of shipping
- For all orders shipped by Royal Mail the overseas postal tracking service can be found here: https://www.royalmail.com/sending/international/overseas-postal-tracking
Most orders purchased before 3pm will be sent out the same day, unless there is a note at the bottom of the item page. This usually applies to non stocked items so please allow an extra 2-3 working days for delivery
Both UK & International Royal Mail services are updated with details of any delays here: https://www.royalmail.com/service-update
If your delivery address is located outside of the UK, you may be required to pay import duties and taxes. These charges are imposed by your country's customs authorities when the shipment arrives at your location. Customs policies differ among countries, and all international shipments may be subject to cross-border inspections. You will be responsible for any additional charges related to customs clearance, and we suggest that you contact your local customs office for more details
We understand that getting your products quickly is important to you, which is why we make every effort to get your order to you as soon as possible. If you have any questions about our shipping policy, please don't hesitate to contact us
*This is an estimated delivery aim from Royal Mail, not a guaranteed delivery time
At Matt Lewis Racing we want you to be completely satisfied with your purchase. If you’re unhappy with your purchase, please contact us immediately. We will first attempt to resolve your issue with the purchase or alternatively offer a refund or exchange in accordance with the below policy:
UK and EU Customers:
Under UK and EU consumer law you have the right to a refund of the purchased goods within 30 days. Within the 30 day period a refund or exchange will be conditional on the product and its packaging being returned in its original condition. You will be responsible for the postage cost of returning the goods
If the product is received by you, the consumer in a defective or damaged state we will offer a full refund or exchange. Photographic evidence will be required. The product will need to be returned before a refund or exchange can be processed
All returns MUST be authorised by us in advance
Customers Outside the UK & EU:
Customers outside the UK and EU are subject to the laws and regulations of their respective countries. We will comply with any applicable laws and regulations regarding returns, refunds, and exchanges. Please contact us for more information on returns and refunds outside of the UK and EU
Exchanges:
If you would like to exchange a product, please contact us with your order number and details of the product you would like to exchange. We will be happy to arrange an exchange for you, subject to availability
Refunds:
If you would like a refund, please contact us with your order number and details of the product you would like to return. We will process your refund within 48 hours of receiving the returned product. Please note that we will not be able to issue a refund until we have received the returned product
Exceptions:
Please note that certain products may be exempt from our refund and exchange policy. These include custom-made products, special orders, and products that have been used or damaged
If you have any questions or concerns about our refund and exchange policy, please do not hesitate to contact us. We believe that our customers should be completely satisfied with their purchase and will do our best to address your concerns
