This is a pair of high quality manifolds with built in cats (manicats) for Porsche 911 991.1 Carrera, a combination both conserving weight as well as torque and boosting the sound and performance of the 991.1 like any high quality aftermarket exhaust product should. These manifolds have been designed from scratch for the Gen 1 991 and fit perfectly to the car's OE system or to any of our other aftermarket products that fit this vehicle. We have chosen to use HJS 200CPSI catalytic converters built into a large bore, free flowing design with long tube runners for maximum gains in power, faster throttle response, and a nice flat-six engine tone.
Power gains of over 25whp and ft-lbs of torque!
Primary Diameter = Primary External Diameter 48mm
Collectors Diameter = Collector External Diameter 67mm
For the UK market, we are required by law to display the following disclaimer: This product makes use of non-type approved catalytic converters and we advise that for the UK market, this component can not legally installed on a vehicle (1st of March, 2001 onwards) for use on public roads.