Autotecknic CS Style Lip & Rear Diffuser

[thefilipaneseboy]

Been looking through the threads and haven't found much info on those with these installed. Any input on them would be great!

Anyone here have any experience on them? Wondering how fitment is and how the installation process went.

P.S. I recently received their CS style trunk spoiler, so I will update on the install and fitment in a few days if anyone is interested!

[henrylee]

I believe autotecknic quality is pretty good. Obvious not exactly OEM but for the price it’s pretty close. A lot better than the eBay crap

[aswy6]

I have their CS style spoiler. Fitment was 10/10 in my opinion

[thefilipaneseboy]

Originally Posted by aswy6

I have their CS style spoiler. Fitment was 10/10 in my opinion

That's good to hear! I'll be putting it on tomorrow!

[adc]

I have the RW front and rear CS style spoilers. Rear one, they first shipped one that had a QC problem, but they were easy and pleasant to deal with, and sent a replacement which fit very well.

For the front, their CS style has the mounting inserts to accommodate the OEM CS brackets. That is how I installed mine, fit was great and the whole thing is rock solid.

Given that the front lip is basically sacrificial in nature, I couldn’t stomach the OEM cost for it.

[horsepower_and_hounds]

So how did it go?
I have the Autotecknic M-Performance style spoiler on the M4 and fitment/quality is very poor.... just say'n

[PayamFSU]

Originally Posted by adc

I have the RW front and rear CS style spoilers. Rear one, they first shipped one that had a QC problem, but they were easy and pleasant to deal with, and sent a replacement which fit very well.

For the front, their CS style has the mounting inserts to accommodate the OEM CS brackets. That is how I installed mine, fit was great and the whole thing is rock solid.

Given that the front lip is basically sacrificial in nature, I couldn’t stomach the OEM cost for it.

Do you have the part numbers for the OEM CS mounting hardware.

[mike@x-ph.com]

[TideMD]

Originally Posted by PayamFSU

Do you have the part numbers for the OEM CS mounting hardware.

Here's the link I used for reference:

https://www.getbmwparts.com/p-f8x-m3...t-pkm4cslipkit

Their kit includes the front spoiler, so I just copied P/N for all the mounting components and ordered a la carte. The list even shows the quantity of each piece you need.

One issue I encountered was the middle support brace didn't really align well and was difficult to tweak it into looking correct. So I just deleted it from the install process and went with the two side brackets and screws into the bumper. Holding solid so far.

[PayamFSU]

Originally Posted by TideMD

Here's the link I used for reference:

https://www.getbmwparts.com/p-f8x-m3...t-pkm4cslipkit

Their kit includes the front spoiler, so I just copied P/N for all the mounting components and ordered a la carte. The list even shows the quantity of each piece you need.

One issue I encountered was the middle support brace didn't really align well and was difficult to tweak it into looking correct. So I just deleted it from the install process and went with the two side brackets and screws into the bumper. Holding solid so far.

Thanks !

[thefilipaneseboy]

Reviving this thread to add some input on the CS style trunk spoiler and the extended fin rear diffuser by Autotecknic.

The wing fitment I would say is as perfect as a rep wing could get. The surface fit well with the trunk and the width is equal on both sides. Quality wise, the weave is nearly perfect aside from some slight waviness in the sharp corners.

The diffuser fit nearly perfect imo. Clears my 102mm carbon angled Remus tips with about 1/4in to 1/2in near the closest parts to the them. Lined up well where the original screws go. The weave on this was perfect on all the corners and throughout the diffuser.

For the price, Autotecknic isn't a bad option and I am pretty happy with the purchases.