![SLN B58 Gen1 Downpipes](http://williamsperformance.co.uk/cdn/shop/files/WP_B58_SC-1_1000x667.jpg?v=1693149619)
SLN Performance BMW B58 downpipes available in catless (decat) or catted (sports cat) versions.
Both are made from stainless steel and feature a 4.5'' flange which then increases to 5'' on the main body of the downpipe.
The sports cat option uses a 100cel cat section.