Straight-through tubing section replaces the heavy and restrictive OEM catalytic converters for maximum power and sound; recommended for track/off-road use only.                                                                         

FEATURES:

• Fits all BMW 335/135i vehicles (2006-2011)
• Improves power by 32 whp and 39 ft-lbs of torque
• Straight-through design allows for maximum power and sound
• Constructed from mirror-polished T304L stainless steel
• Direct bolt-on replacement for OEM primary catalytic converters
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty