-One-piece design with 2 12 muffler bodies-2 pipes have a stepped header design for added performance-Pipes mount to OEM mounting bracket-86-87 models require brake stop BP-1 must be ordered separately-1 34 pipes for 04-06 models use OEM heat shields 2 pipes for 04-06 models include heat shields-Heat shields for 86-03 XL models are available separately-Made in the USA