Manufactured from highest quality T304 grade stainless steel
Mandrel bent and fully TIG welded for strength and durability
CNC machined flanges for strong, solid support and an accurate fit
Designed to improve power, torque and throttle response across the entire RPM range

 

 
3.5″ Exhaust Decat Pipe compatible with BMW 1 Series F20 / F21 M135i 2011-2016, made from high quality T304 Stainless Steel to ensure both improved performance and durability. Our 3.5″ decat pipe replaces the restrictive OEM pipe with a more free flowing part to improve throttle response and deliver more power and torque throughout the RPM range. by Gravity