Rieger BMW 1 Series F20 F21 LCI Rear Diffuser upgrade for M135i and M140i
Transform the rear of your BMW 1 Series with the Rieger F20 F21 LCI diffuser. Designed specifically for the facelift 2015 onwards BMW 1 Series M135i and M140i, this rear diffuser is a direct replacement for the OEM rear bumper insert and delivers an aggressive, factory-plus look. Precision manufactured in Germany from durable ABS, the Rieger BMW 1 Series diffuser gives your F20 or F21 a sharper, sportier finish that looks right at home on an M135i or M140i daily driver or track toy.
We run this diffuser ourselves and our customers love it for the perfect fit, OEM-quality finish and how it completes the rear end. If you are searching for BMW M140i diffuser, BMW M135i diffuser, BMW 1 Series rear diffuser, Rieger F20 diffuser or Rieger F21 diffuser, this is the performance styling part you need.
Why choose the Rieger F20 F21 LCI Diffuser
- Direct replacement for BMW 1 Series F20 F21 LCI rear bumper insert on M135i and M140i models
- Made in Germany by Rieger for consistent fit and finish
- High quality ABS plastic for strength, durability and OEM-style texture
- Sporty, aggressive rear look that complements the M135i and M140i twin-exit exhaust
- Ideal upgrade for enthusiasts wanting a clean, OEM-plus appearance
Finishes and Part Numbers
- Carbon Look Pattern: Part number 99605
- Matte Black: Part number 35066
- Gloss Black: Part number 88171
Compatibility
- BMW 1 Series F20 5 Door M135i M140i LCI 2015 onwards
- BMW 1 Series F21 3 Door M135i M140i LCI 2015 onwards
- Does not fit pre-LCI models
- Note for non M135i and non M140i models: a dual exhaust conversion is required
Good to know
- OEM rear reflectors are not included
- ABS construction is robust and ideal for daily use
Fitting and Installation
As a direct replacement, the Rieger diffuser is designed for straightforward fitment on LCI M135i and M140i models. For professional installation, book our in-house fitting service at Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
Compatibility Check before dispatch
We verify fitment prior to shipping. Provide your UK registration or the last 7 digits of your VIN at checkout and we will confirm compatibility for your BMW 1 Series F20 or F21 LCI M135i or M140i.
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Fitted photos
Gloss Black Version
Carbon Look Version pictured on pre-facelift car to show finish only. This is not the LCI diffuser.
Customer cars
Brand
Manufactured by Rieger
Ready to upgrade
Give your BMW 1 Series F20 or F21 LCI the rear-end it deserves. Choose your finish above and enjoy an OEM-fit Rieger diffuser that looks great and stands up to daily use. For fitting at Nforcd Warwickshire, email Sales@nforcd.com.