3.5″ Exhaust Decat Pipe – BMW 1 Series M135i F20 / F21 2015-2016

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.