STP Single Exit Exhaust *PRE-ORDER*

THIS IS A PRE-ORDER

Meaning your product will not start production until the exhaust officially launches 

Launch date is: 8/30/25

EXHAUSTS WILL NOT SHIP OUT UNTIL AFTER PRODUCTION BEGINS ON THE LAUNCH DATE

This is the FIRST single-exit exhaust made for sale for the F3X B58 chassis cars 340i/440i . Due to its single-exit exhaust path, there is now even more room for power with the STP single-exit exhaust. Because of its straight out 3.5-4 inch exhaust design, the exhaust gases are able to exit the turbo in a much more efficient way leading to faster spooling times, cooler turbo temps, and more horsepower gains.

Our BMW F3X 340i/440i Single Exit Cat-Back is the best-sounding catback on the market. It boasts an authoritative tone with superior resonance and clarity. Crafted from quality T-304 stainless steel or Grade 4 titanium, it's designed to last and improve your vehicle's performance. 

Experience minimal drone with the STP Catback System, featuring an OEM hanger location and single exit design that is lighter than the original exhaust.

Kit includes, Exhaust System with Single Exit, Clamps+Hardware, and STP muffler.