BMW 1 Series F20/F21 LCI Rear Diffuser V1 — Gloss Black, Dual Left Exit (M Sport, 2015–2019)

For the BMW 1 Series F20 (5-door) and F21 (3-door) LCI (facelift) with M Sport bumper and dual left exit exhaust — our gloss black rear diffuser (V1) adds a sharper, more aggressive finish to the rear-end that integrates cleanly with the factory bumper flow.

⚠️ Dual left exit exhaust configuration only. This diffuser is designed specifically for the dual left exit exhaust setup, where both exhaust tips exit on the left side of the rear bumper. It will NOT fit dual exhaust (one each side) or single exit configurations. Please check your exhaust configuration before ordering.

LCI (facelift) models only. This diffuser fits the LCI M Sport bumper (2015–2019). It will not fit the pre-LCI F20/F21 (2011–2015), which has a different rear bumper design.

M Sport bumper only. It will not fit standard SE, Sport, or Luxury Line bumpers.

Direct-fit compatibility — LCI M Sport bumper with dual left exit exhaust only:

• BMW F20 1 Series LCI (5-door hatchback) — M Sport with dual left exit exhaust, 2015–2019
• BMW F21 1 Series LCI (3-door hatchback) — M Sport with dual left exit exhaust, 2015–2019

Common models with dual left exit exhaust include 116d, 118d, 118i, 120d, and 125d. Please verify your exhaust setup by looking at your rear bumper — if both exhaust tips are on the left side, this diffuser fits your car.

Not compatible with:

• F20/F21 pre-LCI (2011–2015) — different rear bumper design (see our separate pre-LCI diffuser listings)
• F20/F21 with dual exhaust (one exit each side) — different diffuser required
• F20/F21 with single exit exhaust — different diffuser required
• F20/F21 with SE, Sport, or Luxury Line bumpers — different bumper design
• F40 1 Series (2019 onwards) — newer generation

Different exhaust configuration or generation?

• Have one exhaust exit on each side instead? See our F20/F21 LCI dual exhaust rear diffuser V1
• Own the pre-LCI F20/F21 (2011–2015) with dual left exit? See our F20/F21 pre-LCI dual left exit diffuser V1

Not sure of your exhaust configuration? Send us a photo of your rear bumper and we'll confirm compatibility before you order.

Manufacturer references: BMW, 1 Series, F20, F21 are trademarks of BMW AG, used here solely to indicate product compatibility. AutoCap Solutions is an independent aftermarket retailer and is not affiliated with, endorsed by, or authorised by BMW AG.

All AutoCap Solutions products are covered by our standard replacement policy in the rare event of manufacturing fault.