True to form, Dinan has developed this Free Flow stainless exhaust to increasing flow by reducing backpressure, resulting in more power. Best of all, it has a great tone that is aggressive when you want it to be, but pleasant and civilized under normal driving conditions. This system weighs less than the stock system and is constructed out of stainless steel for the quality and performance you'd expect from your BMW.

Features Include:

• 8 HP @ 6000 RPM, 7 LB-FT @ 6000 RPM
• Quad 89mm (3.5") polished or cermic black laser engraved exhaust tips
• Enjoyably louder, sportier sound with a deep growl
• Helmholtz chamber to reduce drone
• Computer controlled valve limits noise during low-speed driving; valve opens fully during high-load conditions to allow free flow
• 100% 304 stainless steel construction
• Uses the factory brackets and hangers for a factory-like fitment

For over 35 years, Dinan has been America's premier tuning company, pioneering advancements in BMW modification while retaining a focus on balanced performance that preserves the original character and driving feel that a BMW offers. When you install a Dinan part on your car, know that it's not only carefully developed and tested, but that Dinan stands behind it with a four year, 50,000-mile warranty. Dinan believes so fully in their “total package” approach that once your car has been fitted with enough of their parts, they celebrate your conversion from stock to Dinan with an exclusive trunk badge, displayed proudly by BMW enthusiasts everywhere.