Supersprint BMW F10 5 Series & F11 5 Series Stainless Steel Sleeve Connecting Pipe Kit for OEM Centre Muffler M135i (F20 & F21)(P) K&N air filters are the

K&N air filters are the perfect choice for BMW enthusiasts looking to enhance their driving experience whilst maintaining the standard intake system

Installation requires cutting of the original exhaust

The product features a central dip that accentuates two sharp fins for added aggression

Developed with tens of thousands of dyno

Supersprint BMW F10 5 Series & F11 5 Series Stainless Steel Sleeve Connecting Pipe Kit for OEM Centre Muffler M135i (F20 & F21)(P) K&N air filters are theThe Supersprint Sleeve Connecting Pipe Kit for OEM Centre Muffler is a precision, direct fit stainless steel upgrade engineered for the BMW F10 5 Series & F11 5 Series. It replaces the restrictive factory component to free up exhaust flow, sharpen throttle response and give your BMW a deeper, more purposeful note. Supersprint has been handcrafting performance exhausts in Mantova, Italy since 1955. Every system is designed and validated on the dyno not