Cobra BMW F40 128ti GPF Back Performance Exhaust
Looking to unlock a deeper, sportier BMW 128ti exhaust note without touching the catalyst or GPF? The Cobra BMW F40 128ti GPF Back Performance Exhaust is the upgrade enthusiasts search for when they want an aggressive 1 Series soundtrack, everyday drivability and quality engineering. This GPF-back system fits from the Gasoline Particulate Filter backwards and replaces the centre and rear sections with 3 inch 76.2 mm pipework for a stronger tone, richer bass and a more engaging drive. All relevant fittings and gaskets are supplied for a straightforward install.
Perfect for anyone searching for BMW 128ti exhaust, BMW 128ti F40 exhaust, Cobra Sport 128ti exhaust, BMW 1 Series F40 performance exhaust, GPF-back exhaust, rear box delete and valved exhaust upgrades. We have supplied and fitted these systems for customers and the feedback is consistently positive. Expect a deeper, more purposeful sound with a quality finish and a lifetime warranty from Cobra.
Why choose this BMW 128ti GPF-back exhaust
- Made for BMW 128ti F40 2020+ 1 Series
- 3 inch 76.2 mm pipework for improved tone and presence
- Fits from the GPF back - replaces centre and rear sections
- Options for Valved or Non-Valved to suit your sound preference
- Choice of premium 4 inch 101.6 mm tailpipes including carbon fibre
- Keeps stock catalyst and GPF in place
- All relevant fittings and gaskets supplied
- Cobra Lifetime Warranty non-transferable
Sound testing - box delete GPF-back
- Engine at idle: 68 dB +10.7 dB over stock
- Static 4,000 rpm: 86.4 dB +4.8 dB over stock
Valved vs Non-Valved
Valved: retains factory exhaust valves. Switching drive modes Eco to Sport to Track continues to control the exhaust tone from quieter to louder, just as before.
Non-Valved: removes the exhaust valves. Drive mode changes will not alter sound. This does not harm vehicle operation. Cobra has tuned the system to sound great without valve control.
Tailpipe options 4 inch 101.6 mm
- TP34 - 4 inch Chrome Inward Rolled Tailpipe
- TP38 - 4 inch Chrome Inverted Tailpipe
- TP17 - 4 inch Jap Style Tailpipe
- TP38-BLK - 4 inch Black Ceramic Coated Inverted Tailpipe
- TP107-CF - 4 inch Slash Cut Carbon Fibre Tailpipe
- TP108-CF - 4 inch Slash Cut Carbon Fibre Tailpipe
Compatibility
BMW 1 Series
- F40 2020+ - 128ti
Part numbers
Valved
- BM145TP34 Valve - TP34
- BM145P38 Valve - TP38
- BM145TP17 Valve - TP86-17
- BM145TP38-BLK Valve - TP38-BLK
- BM145TP107-CF Valve - TP107-CF
- BM145TP108-CF Valve - TP108-CF
Non-Valved
- BM143TP34 Non-Valve - TP34
- BM143TP38 Non-Valve - TP38
- BM143TP17 Non-Valve - TP86-17
- BM143TP38-BLK Non-Valve - TP38-BLK
- BM143TP107-CF Non-Valve - TP107-CF
- BM143TP108-CF Non-Valve - TP108-CF
Manufactured by
Cobra
Warranty
Cobra Lifetime Warranty non-transferable
Professional fitting
We recommend professional installation for the best fit and finish. Nforcd offer in-house fitting in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Photos and video
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