Maxton Design BMW F20 F21 M-Power Rear Diffuser & Rear Side Splitters (Inc. M135i & M140i)
Transform the rear end of your BMW 1 Series with the Maxton Design Rear Diffuser and Rear Side Splitters for F20 and F21. This rear diffuser kit is a proven upgrade for BMW F20 F21 M Power models, including M135i and M140i, delivering aggressive OEM+ styling and road-ready durability. If you are searching for a BMW F20 rear diffuser, BMW F21 rear diffuser, M135i diffuser, M140i diffuser, BMW 1 Series rear diffuser, or Maxton Design rear splitter kit, this is the must-have aerodynamic styling upgrade.
Crafted from high-quality ABS plastic specifically engineered for automotive applications, this Maxton Design diffuser offers strength, flexibility and a precise fit. From our own in-house experience fitting these and from customer feedback, the fitment, look and quality are excellent. Expect a sharper, wider stance and a clean, performance-inspired finish that complements the factory lines of the F20/F21.
Why choose this BMW F20 F21 rear diffuser and side splitters
- Perfect for BMW 1 Series F20 / F21 owners seeking a rear diffuser upgrade that enhances stance and road presence.
- ABS construction for durability and flexibility, ideal for daily-driven cars and performance builds.
- Direct, hassle-free fitment with a typical installation time of around 30 minutes.
- Designed to work with M Power styling, including BMW M135i and BMW M140i models.
- Brilliant visual impact: a premium Maxton Design body kit piece that looks factory-fresh yet properly aggressive.
Key features
- High-quality ABS plastic used in OEM bumpers and bodywork.
- Increased strength and flexibility for real-world use.
- Designed for precise fitment on BMW 1 Series F20 F21 M Power.
- Fast, simple installation for a big visual upgrade in minimal time.
Vehicle compatibility
BMW 1 Series F20 / F21 (2011–2015) Pre-LCI. Includes M135i and M140i.
What’s included
- Rear Diffuser
- Rear Side Splitters (Left and Right)
- Mounting kit
Part number
BM-1-F20-M-CNC-RS1A
Fitting and installation
Estimated fitting time: approximately 30 minutes. Professional installation recommended.
Prefer us to fit it for you? Nforcd offers expert installation in Warwickshire. Request a fitting quote: Sales@nforcd.com
Compatibility check before dispatch
We will verify fitment prior to shipping. Provide your UK registration number or the last 7 of your VIN at checkout so we can confirm compatibility for your BMW F20 F21 M135i or M140i rear diffuser and side splitters.
Manufactured by
Maxton Design
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