
These large bore downpipes are larger in diameter than the factory items, allowing exhaust gases to exit the engine more freely and improving efficiency. Combined with a hi-flow sports catalyst, it delivers a significant increase in performance and a noticeable change in sound on the F32 428i.
Please note: Designed to fit with the Milltek cat-back system only. Classed as a race product - intended for off-road/motorsport use only and may require an ECU remap.
Features
- 76.2mm (3") large bore pipework
- Hi-flow sports catalyst
- Improved gas flow and performance
Fitment
- BMW F32 428i