APR Catback Exhaust System | B9 A4 · A5 F06 · F12 · F13 M6 4.4L Turbo V8 [S63] 2 mm on the M235i/M240i

2 mm on the M235i/M240i which means the new bar can be adjusted from 45% to 76% stiffer than the stock front sway bar

25mm Blanking Plug

We're thrilled to introduce APR's Engine Control Unit (ECU) Upgrades for the powerful 4

The imposing carbon fiber brace can be installed in a matter of minutes and used in conjunction with either the stock or Dinan intake systems

This hose is compatible with both OEM and upgraded APR charge pipes

APR Catback Exhaust System | B9 A4 · A5 F06 · F12 · F13 M6 4.4L Turbo V8 [S63] 2 mm on the M235i/M240iIntroducing the APR Catback Exhaust System for the Audi B9 S4 and S5! The APR Catback Exhaust System for the Audi B9 S4 and S5 is a complete, high performance exhaust solution that runs the entire length of the vehicle from the catalyst back. Inspired by the larger center pipe design of the higher output RS4 and RS5 models, this system is engineered to boost performance, elevate sound, and enhance aesthetics with customizable exhaust tips that are