NEW FOR MERCEDES A45 AMG: bit.ly/XForce-A45-AMG-W176 Engineered to produce even more power from the most powerful four-cylinder engine in the world, our latest offering includes a cat-back system and downpipe to suit the Mercedes A45 AMG (W176). Amplifying the pops & crackles the A45 is known for, we have taken things to the next level with a stainless steel cat back system featuring our patented VAREX Valve Technology which allows you to adjust the sound with ease, at the touch of a button. ��