This off-road only header is a pre-owned unit reconditioned with a new high flow metallic catalytic converter. Pipes will be discolored from use.

This header features equal length tuned primaries with threaded ports for the factory oxygen sensors. Performance increase is most felt in the mid RPM range with a very measurable increase in torque. Easy to install, direct replacement for the stock unit means no modifications necessary.

Be sure to read associated technical articles pertaining to replacement of catalytic converters and catalytic converter considerations prior to replacing a catalytic converter. The original cause of failure must be addressed or you will damage the new unit too!

This unit is sold for off road use only. Fits Cooper and Cooper S. No warranty, expressed or implied.