Wavetrac BMW M135i/M140i/M235i/M240i ABT LSD Built Differential (F20/F21/F22/F23)

Wavetrac ABT LSD Built Differential for the BMW F Series M135i, M140i, M235i & M240i is an essential modification that dramatically transforms the vehicle's handling characteristics. The addition of a Wavetrac Limited Slip Differential will allow you to consistently transfer more power to the ground and reduce slip whilst making oversteer more predictable and controllable.

Each pre-assembled exchange axle comes complete with the following:

1. Wavetrac ATB LSD
   
2. OE BMW Ring Gear Bolts
   
3. New, Genuine BMW Axle Seals
   
4. Backlash Setup to OE Tolerances
   
5. Precisely Machined Ring Gear
6. Blanking Plate for E-LSD Motor 

You will need to spec oil, for this application we advise for Motul Competiton 75w140 and you will need to code out the factory E-LSD in the electronic control unit, Wavetrac can do this in-house, specialist installers can do this too. 

The exchange process is a simple 2-step process you can find below.

1. Pay for the product + the exchange deposit and Wavetrac will send out to you a 30.309.155WKF or 30.309.172WKF
2. Wavetrac will then refund the exchange deposit if a complete, usable (in good working order) axle is received within 10 working days. Axles which require maintenance/repair to be put into service or are not in working order will not be refunded. Before sending your axle to Wavetrac, remove the electronic motor as they do not need this. 

COMPATIBILITY

- BMW F20/F21 M135i (2011-2016)
- BMW F20/F21 M140i (2016-2019)
- BMW F22/F23 M235i (2014-2021)
- BMW F22/F23 M240i (2014-2021)

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.