Maxton Design Rear Side Splitters – BMW 4 Series Convertible/Coupe (F33/F32)
Add a clean, OEM+ look to your 4 Series with precision-made rear side splitters. Designed using 3D scanning for a picture-perfect fit, these gloss black splitters sharpen the rear profile and visually lower the car without fuss.
Made from tough ABS plastic used widely in automotive parts. The material is lightweight, durable and has slight flexibility to handle daily use. Supplied ready to install with a protective film on the finish.
Fits BMW 4 Series F33 Convertible 2014-2020 and F32 Coupé 2013-2020. Use our vehicle lookup or check the Vehicle Fitment tab to confirm your car.
- Includes left and right rear side splitters, fitting kit and fitting manual
- Gloss black finish – no painting required
- TUV MATERIALGUTACHTEN certified material
Installation and care
We recommend professional fitting if you are not confident with the supplied manual. Test-fit first to confirm alignment.
Do not remove the protective film until you are sure the part fits your vehicle. Removing it will void returns.
Do not remove the holographic verification sticker. It confirms the product is genuine and its removal will void returns.
Please match your vehicle to the details above and images before ordering. Incorrect installation or use is at the buyers risk.
Choosing a Kit
Our vehicle registration lookup system cannot detect factory trim level. It is important for customers to check the specification of their own vehicle against the product description, and if their vehicle has an existing sports trim level, body kit or factory enhancement that may cause it to look different from other similar models.
For example: Volkswagen R-Line, BMW M-Power/M-Pack, Audi S-Line, Ford ST-Line, Merc AMG-Line, Seat FR.
These kits will not fit models that don't meet these specifications.
Returns
Purchased the incorrect kit for your vehicle? Or not sure you like the surface finish when it arrives? No problem!
Maxton Design products are eligible for return if the product has not been fitted, drilled, modified or damaged in any other way and still has the protective factory film intact. Unfortunately, there are no exceptions, this applies to fully removed and partially removed films.
Products with a protective film in place are clearly marked with this sticker, if you believe there to be an issue with the product but you can't tell without removing the film, please contact our support team directly for assistance.
DO NOT REMOVE THE FACTORY FILM UNTIL YOU'VE LINED IT UP, AND YOU'RE READY TO FIT THE PART.
See our Terms & Conditions for more information.
Installation & Fitting
Instructions & Guides
Maxton Design provide either an online reference (below) or printed instructions with their products, we can't stress enough how important it is to follow these guidelines. Not only does this create a safe, aesthetically well fitted product, but it increases the longevity and lifespan of the kit.
Neither Progressive Parts nor Maxton Design will be able to provide and support or warranty for products fitted incorrectly. For example, front splitters require the front bumper to be removed, without doing so the bolts will be incorrectly positioned and may not be able to cope with the down-force exerted on it. Straying from the guidelines in this manner must be done so at the owners risk.
Fibreglass & "Non-Prepped" Products
By adding these products to your basket you are agreeing to the below statement.
All Maxton Design Fibreglass products including certain bumpers, spoilers, spoiler extensions and skirts will require “prep” before installing.
These are not a simple 'ready to fit' modification. In transit, the items may get chipped or marked and as such prior to painting it is important you understand that the parts may require filling, sanding and repairing (defined "prep") prior to paint being applied, which can be undertaken by any reputable body shop at minimal cost.
Return requests based on not anticipating the definition above are not accepted, please be aware you have agreed to this statement and the definition of “prep” work required prior to purchasing.
Product images shown for sale often indicate a finished product, the colour shown on the vehicle is for illustration purposes.
Fitting Manuals
Please note, Maxton Design products are only available for UK shipping.
Including Northern Ireland, Scottish Highlands and Channel Isles. Delivery fees apply.







