Maxton Design Rear Side Splitters V3 – BMW M3 Saloon/Touring (G80/G81)
Give your G80 or G81 a sharper, OEM+ look with these rear side splitters. They sit low at the rear corners to visually widen the car and tie in perfectly with the factory carbon package.
Fitment
Designed for:
– BMW M3 Saloon G80 2021-
– BMW M3 Touring G81 2022-
Fits only cars with the factory carbon package. Use our vehicle lookup or check the Vehicle Fitment tab to confirm before ordering.
Design and finish
Created using 3D scanning for a precise, repeatable fit. Supplied in Gloss Black to match popular styling parts and factory trims. Lightweight with a little flex, so it sits flush without stress on fixings.
Material
High quality ABS plastic – widely used in the automotive industry for exterior trims due to its impact resistance and weather stability. TUV MATERIALGUTACHTEN certified material.
Whats in the box
– Rear Side Splitters – left and right
– Fitting kit
– Fitting manual
Why this upgrade matters
Cleans up the rear quarter with a purposeful finish that complements the M3s lines. Subtle, smart, and in keeping with factory styling.
Installation and care
Test fit first before drilling or fixing. The product arrives with a protective film to prevent marks in transit. Do not remove the film until you are sure of fitment – removal will void returns. We recommend professional installation unless you are confident following the manual. We cannot be held responsible for incorrect installation or use.
Each genuine Maxton Design part includes a holographic verification sticker. Do not remove this sticker – removal will void returns.
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.







