BMW 1 Series F20/F21 Pre-LCI Rear Diffuser V1 — Gloss Black, Dual Exhaust (M Sport, 2011–2015)

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

⚠️ Dual exhaust configuration only — one exit on each side. This diffuser is designed for the dual exhaust setup where you have one exhaust tip on the left and one on the right. It will NOT fit single exit or dual left exit (both tips on same side) configurations. Please check your exhaust configuration before ordering.

Pre-LCI (pre-facelift) models only. This diffuser fits the Pre-LCI M Sport bumper (2011–2015). It will not fit the LCI facelift F20/F21 (2015–2019), 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 — Pre-LCI M Sport bumper with dual exhaust (one exit each side) only:

• BMW F20 1 Series Pre-LCI (5-door hatchback) — M Sport with dual exhaust, 2011–2015
• BMW F21 1 Series Pre-LCI (3-door hatchback) — M Sport with dual exhaust, 2012–2015

Common models with this exhaust configuration include M135i. Please verify your exhaust setup by looking at your rear bumper — if you have one exhaust tip on each side, this diffuser fits your car.

Not compatible with:

• F20/F21 LCI facelift (2015–2019) — different rear bumper design (see our separate LCI diffuser listings)
• F20/F21 with single exit exhaust — different diffuser required
• F20/F21 with dual left exit exhaust (both tips on left side) — 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 dual left exit exhaust (both tips on the left side)? See our F20/F21 pre-LCI dual left exit diffuser V1
• Own the LCI facelift F20/F21 (2015–2019) with dual exhaust? See our F20/F21 LCI dual exhaust 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.