before: 2011 Benz GLK 350 Resonator Bypass, Straight Pipe Regular $150 each or Stainless Steel $200 each. X-Pipe Regular $400 each or Stainless Steel $500 each
after: 2011 Benz GLK 350 Resonator Bypass, Straight Pipe Regular $150 each or Stainless Steel $200 each. X-Pipe Regular $400 each or Stainless Steel $500 each
before: 2012 Mercedes Benz GLK350 Exhaust Sleeve Bypass, Regular $150 each or Stainless Steel $175 each
after: 2012 Mercedes Benz GLK350 Exhaust Sleeve Bypass, Regular $140 each or Stainless Steel $170 each