System Type: Exhaust System. Muffler Type: RS-4. Header/Muffler/End Cap Type: Stainless/aluminum/carbon fiber. EMIS Code: 3.

• Stainless systems come with 94 dB insert installed (meets AMA competition requirements), 2 meter Max insert in the box
• Tapered headpipe delivers optimal flow and performance
• Delivers huge power at a very light weight
• All Signature series exhaust are tested, documented and marked with appropriate EPA noise emissions labels
• Offers better handling thanks to a lower centralized mass coefficient
• Uniquely-styled pentagonal muffler body with a carbon fiber cone end cap
• Front cap design functions as a polyresonant chamber to lower dB output while improving mid- to top-end power
• Two-staged, stepped baffle