The Fabspeed Porsche 986 Boxster Supercup Exhaust System (1997-2004) features: 
 
Aggressive track-designed exhaust system providing maximum flow and power; recommended for off-road and track use only. The Supercup is significantly louder than our Maxflo Exhaust, but if you're looking for a very aggressive exhaust note and you're not worried about waking up the neighbors, this is the system for you! Includes Deluxe Bolt-On Dual Style Tips in your choice of finish to compliment your vehicles look and style.
FEATURES:
Fits all Porsche 986 Boxster / S vehicles (1997-2004)
Includes Deluxe Dual Style Tips in your choice of finish
Increases power and improves throttle response
Saves 40lbs from the rear of the vehicle compared to the full OEM exhaust
Complies with emissions regulations
Includes two resonators to minimize weight and improve top end power.
Constructed from high quality 14-16ga CNC mandrel-bent T304 stainless steel for maximum performance and durability
Direct replacement for the OEM muffler with no cutting or welding required
All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty
NOTE:
1997-1999 986 Boxster Supercup STREET Exhaust includes 200 cell tri-metallic sport catalytic converters to remain emission compliant with no CEL's
1997-1999 986 Boxster Supercup RACE Exhaust includes catbypass pipes with O2 bungs in the factory position, and is recommended for Off-Road Track Use Only