The Rieger rear diffuser, also known as a rear skirt insert, is designed for the BMW 1 II (F20/F21) with an original M-Sport rear bumper. It is suitable for the M135i and M140i with original tailpipes on the left and right.
The diffuser is made from ABS plastic and is intended for painting. Mounting equipment is included.
Note: Not suitable for cars with a tow bar. It also fits 114i–125i and 114d–125d models with an original M-Sport rear bumper and a sports rear silencer with one tailpipe on the left and one on the right.
Suitable for: BMW 1 II (F20/F21).
Manufacturer’s vehicle data
- 1-series F20 (1K4): 05.2015- (ex facelift) LCI – sedan / 4-dr.
- 1-series F21 (1K2): 05.2015- (ex facelift) LCI – sedan / 2-dr.
Original data from Rieger Tuning. Please check model, year and version of your vehicle before ordering; if in doubt, contact us and we will check for you.
Versions
- ABS, needs painting
- Gloss black
- Carbon look
Approval
This part comes with a German Teilegutachten (parts certificate); the document is included. In Germany the part must be entered in the vehicle registration after fitting.
Manufacturer part no. (Rieger): 35066, 88171, 99605

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