CORSA Performance Exhausts designs improved axle-back exhaust systems for the 2009 ZR1 and Z06 Corvettes. The company has updated its axle-pipe routing to reflect the latest driveline and rear-suspension cradle improvements of the 2009 Corvette models, providing greater clearance and ease of installation with the new systems. These design enhancements also apply to CORSA’s 2006-2008 Z06 systems. At 4 lb (1.8 kg) lighter than stock, the ZR1 and Z06 exhaust systems deliver a 22% gain in exhaust flow vs. stock with the valve open, according to CORSA flow bench tests. C6 Corvette owners can expect a power increase of 10 hp (7.46 kW) and 14 lb·ft (18.98 N·m) of torque. CORSA’s acoustic styling, says the company, provides an immediate uncorked rumble and a drone-free interior for the ZR1 and Z06 performance exhaust systems. Two performance exhaust systems and one cross-over pipe are available for the 2006-2009 ZR1/Z06 LS7 C6 Corvette models.