From behind, the X7 is a wide, tall wall of paint, and the factory lower bumper does little to break it up. The SQ-Aero Dry Carbon Fiber Rear Diffuser Set replaces that lower section with a full carbon rear end: a sculpted upper frame around both exhaust outlets, a three-fin lower diffuser, side splitters and rear corner trims.
Every piece is pre-preg dry carbon fiber in a gloss twill weave, not a wrap, vinyl film or hydro-dipped plastic. The whole set weighs about 1,582 g (3.5 lb), and it fits the M Sport rear bumper on the 2019-2022 Pre-LCI and the 2023-2027 LCI X7, including the M50i and M60i.
Tow package note: this diffuser does not fit cars with the factory trailer hitch (tow package). Check for a hitch receiver under your rear bumper before you order.
Dry Carbon Fiber Rear Diffuser for the BMW G07 X7 M Sport
This is a full replacement for the factory lower diffuser, not an overlay stuck on top of it. The upper frame wraps the factory exhaust outlets and runs the full 170 cm (66.9 in) width of the bumper. Below it, the lower diffuser carries three vertical fins, and the side splitters and corner trims carry the carbon out to the rear wheel arches, so the rear reads as one finished piece.
Each piece has molded mounting tabs on the back, so it bolts up at the factory mounting points instead of relying on tape. The rear bumper cover stays on the car: the X7 sits high enough that the factory diffuser comes out from underneath.
What's Included
- 1 x Upper diffuser frame with exhaust surrounds
- 1 x Lower three-fin diffuser
- 2 x Side splitters (left and right)
- 2 x Rear corner trims (left and right)
Key Features
- 100% pre-preg dry carbon fiber, not a wrap or vinyl film
- Gloss twill weave with a clear coat finish
- Full replacement for the factory lower diffuser
- No rear bumper removal required
- Three-fin lower diffuser with integrated side splitters
- About 1,582 g (3.5 lb) for the full set
- Fits Pre-LCI and LCI X7 M Sport, M50i and M60i
Dimensions
- Upper diffuser frame: 170 cm (66.93 in) wide
- Lower diffuser: 124.5 cm (49.01 in) wide
- Side splitters: 61 cm (24.01 in) long, 15 cm (5.90 in) tall
- Rear corner trims: 24 cm (9.45 in) tall
Vehicle Fitment
Fits US-market BMW G07 X7 models with the M Sport rear bumper:
- G07 X7 Pre-LCI (2019-2022): xDrive40i M Sport, M50i
- G07 X7 LCI (2023-2027): xDrive40i M Sport, M60i
Not compatible with cars that have the factory trailer hitch (tow package), non-M Sport rear bumpers or the ALPINA XB7.
Installation Notes
Professional installation is recommended. The rear bumper cover does not need to come off. With the car on a lift, the factory lower diffuser comes out from underneath the bumper and the carbon set goes in at the factory mounting points.
- Raise the car on a lift for clear access under the rear bumper.
- Remove the factory lower diffuser and rear lower trims from underneath.
- Test-fit each carbon piece before final mounting.
- Install the upper diffuser frame, then the lower diffuser, side splitters and corner trims.
- Check the gaps around the exhaust outlets and bumper edges, then tighten all hardware.
