BMW G26 4 SERIES 2020+ CARBON FIBRE DIFFUSER – V2
$461
CT Carbon brings this diffuser to fit your BMW 4 Series G26 made from high-quality carbon fibre in a high-gloss finish to add aggression to the rear of your vehicle. Note: Designed to fit models with a quad tip conversion with square tips. Will not fit with standard exhaust Note: This product is ONLY compatible with M-Sport Bumpers
Compatible Models
- 2020+ BMW G26 4 Series (M440i & M440d)
CT Carbon brings this diffuser to fit your BMW 4 Series G26 made from high-quality carbon fibre in a high-gloss finish to add aggression to the rear of your vehicle.
Note: Designed to fit models with a quad tip conversion with square tips. Will not fit with standard exhaust
Note: This product is ONLY compatible with M-Sport Bumpers
Fitting
There are three ways to get your CT Carbon products fitted:
- Book in at our fitting facility in Hertfordshire, UK.
- Find a fitting partner near you and book in for fitting with them directly.
- Follow one of our fitting guides to install the products yourself.
For more information visit: ctcarbon.co/pages/fitting-1
Shipping & Warranty
All CT Carbon products come with a 12-24 month warranty. Full warranty information: ctcarbon.co/pages/warranty
Shipping
- Orders before 3pm GMT dispatched same day.
- Free UK delivery on all products.
- Worldwide delivery available.













































Noah Evans –
Very impressed with the quality of this diffuser. Fits my BMW G26 4 SERIES 2020+ like a glove — even the mounting holes lined up perfectly. Packed really well in foam and arrived with no damage. Free shipping sealed the deal.
Ethan Clarke –
Solid diffuser for my BMW G26 4 SERIES 2020+. The carbon quality is good and the weave is consistent. Shipping took a few extra days but CT Carbon were responsive when I emailed them. Would buy from them again.
Tom Barker –
Love this diffuser for my BMW G26 4 SERIES 2020+. The gloss finish is mirror-quality and the carbon weave is consistent all the way to the edges. Took about 30 minutes to fit with basic tools. Would absolutely order again.
Connor Phillips –
Mixed feelings on this one. The carbon weave on the diffuser looks good but the fitment on my BMW G26 4 SERIES 2020+ needed quite a bit of work to get flush. Manageable if you know what you are doing, but not plug-and-play. Quality could be better at this price.
Kevin Hughes –
It is a good diffuser for the BMW G26 4 SERIES 2020+ but not perfect. The fitment on one side is slightly off and there is a tiny bubble in the lacquer on one corner. CT Carbon offered to help when I raised it, which was good of them.
Matt Collins –
Good value diffuser for the BMW G26 4 SERIES 2020+. Not quite the perfect weave I was hoping for in one corner but that is nitpicking at this price. Overall a really solid part and great customer service from CT Carbon.
Scott Reynolds –
Reasonable quality for the money. The diffuser for my BMW G26 4 SERIES 2020+ does the job and looks decent. Not quite the perfection I was hoping for — one fixing tab snapped during fitting — but passable. Customer service was helpful when I queried.