Hi Lucy,
Quality-wise?
There is no difference. They are both built to the very high standards of MPP and KW.
Design-wise?
Our kits use our own specs for spring rates and valving, based on years of development and real-world testing all over the continent and many race tracks. We also take into account feedback from our customers on how to improve our products based on their own experiences. KW has built and installed one kit on the NextMove Model 3 Dual Motor in Germany. I believe those kits are not in stock either, despite what it says. We know are still having difficulty with some parts on the front suspension. We have had the opportunity to combine some aspects of ours and KW's kits to streamline production, but there are also some aspects that we did not want to compromise on, which will differ from the KW kits.
What is the difference for you as a consumer?
KW is one of the most successful suspension companies in the world. They have hundreds of product lines and are constantly developing for the newest models on the market. They will finish their kit and move on, that's it.
MPP is committed to this community and the Model 3. We love this car, it is not just the car we are working on this month. We are personally invested in the success and performance of our products. We will always go the extra mile for our customers. We are answering emails and talking people through installs at night and on weekends. I was answering customers at the dinner table on Sunday at 9 pm and even at a wedding the day before. If there is any kind of problem, we are here to help you.