N63 & N63TU Catless Race Downpipes — BMW F-Chassis 550i/650i/750i/Alpina B6/B7

Mandrel-bent stainless downpipes for the BMW N63 and N63TU engine, optimizing flow and cutting backpressure for faster spool and a 45–50 HP, 40–60 TQ gain.

Complete Kit Includes:

• Mandrel-bent SS304 stainless steel for durability and exceptional flow
• Deep, aggressive exhaust note
• Retains OEM O2 sensor placement
• Lifetime warranty with satisfaction guarantee

Installation: Direct bolt-on fitment using factory mounting locations; compatible with factory and aftermarket mid-pipes. Catless versions may trigger a check engine light — a CEL Delete Kit is available separately to address this.

Fitment:

• F01/F02 750i, 750Li, Alpina B7 (N63/N63TU 4.4L)
• F06/F12/F13 650i, Alpina B6 (N63/N63TU 4.4L)
• F07/F10 550i (N63/N63TU 4.4L)