BMW 4 Series F32 & F33 M440i Coupe & Grand Coupe (xDrive & non xDrive Models)
2017 and Later
HJS Tuning ECE Downpipes300 Cell ECE Approved HJS Tuning Catalyst. Can be fitted with both Milltek Sport and OE Cat Back Systems
This product is:
System Number: SSXBM1039
1 x HJS ECE Downpipe & Cat Euro 6 for Mx40i Models (300 cell)
Pipe Ø: 3.15" (80.00mm) *
* Pipe sizes may vary from part-to-part. Pipe diameters are indicative of the system as a whole and do not necessarily mean every part is of a uniform size.