For BMW 1 Series F20 F21 M135 M140 Rear Diffuser

54 In stock
Rear Diffuser
Condition  Brand New
Vehicle Service Type 1-Series F20 F21 M135 M140 (Only for models with the M package! from year of 2015)
Color Gloss Black/Carbon Fiber Look
Installation Method Adhesive, Bolts, Screws
Material ABS
Position Rear
Warranty Yes
SKU MO-F20-RL-GB(Gloss Black )、MO-F20-RL-CF(Carbon Fiber Look)

    For BMW 1 Series F20 F21 Rear Diffuser provide aero& sportier look to your vehicle, buy this rear bumper lip now for exterior improve& performance upgrade!


    Please kindly check your car model and make sure the item fitment.

    Please contact us if you have any concerns!

    Please check the Return & Refund Policy there

    For damaged package, please contact us in 3 days after receiving the item
    For Fitment/defective issue, please contact us within 30 days after receiving the item

    NON-authorised return is not accepted.
    NON-defective item return will need buyer to return the item by themselves, return label will not be provides and cash on delivery is not approved.

    Return item must be in original package box, which is in good condition for both package and products. So please don't throw the box before you confirm the product condition & fitment.

      Return Policy

      We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.


      To start a return, you can contact us at

      If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

      You can always contact us for any return question at

      To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.


      If customer received damaged product, customer need to send emailto in 72 Hours of item delivered. Otherwise, no return/replacement/refund will be provided from us.
      Customer need to feedback the product quality/defective issue once they received it in 72 Hours. If customer feedback the item issue after installation, this kind of request is not acceptable, us won't provide return and refund on that order.

      Customer need to send pictures in emails, we will recognize the return reason/confirm the issue(Please feedback the fitment issue with the required pictures/informations within 10 days after MMO send you email to require that/tips MMO suggestted, otherwise the return request will be closed on our end)
      Email content include:

      Return Reason

      Detail information of your car and pictures of the car (for fitment issue confirmation)

      Pictures of the fitment issue area, and full test install (for fitment issue confirmation)

      Pictures of the front look and back view of the products in full view(product condition confirmation)

      Pictures of the all shipping labels in the package box

      Picture of damage area of the product (If damaged product received)

      Return package without authorization by MMO is not acceptable, no replacement or refund will be provided for unauthorized return. Thank you for your understanding!

      Orders which is been shipped out and still in transit/shipment cannot be canceled, returned or refunded. Customer need to apply the return or refund after he receive the products.


      If the return is caused by mmomotorsport, We will provide the return label/refund/exchange. Shipping costs are borne by us and there is no restocking fee.

      There will be restocking fee (20% of the order's original purchase price) been deducted from the refund for non-defective return. Shipping costs are borne by the customer.


        Order Cancellation

        If cancel reason is on mmomotorsport, mmomotorsport will provide full refund to customer

        If cancel reason is on Customer and the order has not been fulfilled, there will be cancellation fee, it 5% of the order amount due transaction.

        Orders which have been shipped out cannot be canceled, please check if you need to apply the return


          Return Address

          For the return address, please email customer service to obtain the address ( ) Thank you!

          What Kind of Return is Acceptable?
          Items must be in new condition and in the original packaging (please do not assemble, install, or modify the product in any way). In the event of fitment, flaw or defect pictures is necessary to complete your request.

          Buyers must contact us within 30 days of delivery and the following information will be provided(if buyer receive defective item/damage items):

          tracking number
          order number
          Defect description
          product photo
          Photo of the shipping label on the box

          Refund Policy


          If order cancelled by us, we will provide full refund, refund can be only to original payment account which customer used to place the order.

          If order cancelled before fulfilled on buyers' reason, we will refund 95% of the order amount.(there is 5% cancellation fee been deducted )

          If buyer want to get refund of the order after order has been shipped out, customer can refuse the delivery and let the shipping company return the package to us. Please note that the return shipping fee will be deducted from the refund.

          Please note: Shipping fee (if shipping service is provided) / Tips is not refundable. 


          Customer Reviews

          Based on 4 reviews

          If you have a single exit exhaust it can be very tight and even block of the exhaust and had to push my exhaust so that the tip would move into the exit but overall it’s a good quality product.

          Justin Roberts

          My BMW has taken new life with this rear diffuser. Have had them on for over a month with no issues and several compliments. They have been ran through automated car wash several times without incident.

          Bailey Mcdoanld

          Great value diffuser. Product is a quality plastic that is very durable.

          Will Dixon
          Well worth the money and great product!

          Overall I am so happy with this order and fully recommend this product. It fits really well in my 2016 BMW 140i with M sport package.

          Thank you!

          (10% Discount Code:FM10)

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