Tenneco has released several DynoMax Performance Exhaust stainless steel systems for 2007-09 Jeep Wrangler JK and JK Unlimited models.
The new systems provide an improvement of up to a seven horsepower and 8-ft. lbs. of torque, says the company.
All of the new cat-back systems feature high-quality, 409-grade stainless steel 2.5-in. intermediate and tail pipes, providing protection against corrosion and permanent discoloration; all necessary OE-grade stainless steel clamps and hardware; detailed installation instructions; and 3-in. polished, stainless steel tips.
The systems include:
•2007-09 Jeep Wrangler JK Unlimited 3.8L (p/n 39457) – dual system dyno-proven horsepower increase of 7 horsepower and 8-ft. lbs. of torque.
•2007-09 Jeep Wrangler JK Unlimited 3.8L with high-clearance, off-road rockcrawler design (p/n 39458) – single system.
•2007-09 Jeep Wrangler JK 3.8L with high-clearance, off-road rockcrawler design (p/n 39464) – single system.
•2007-09 Jeep Wrangler 3.7L (p/n 39445) – single system.