Muffler Type: R-77. Materials: Stainless/stainless/carbon (3/4 system). EMIS Category: 3.

• Meet noise level regulations of most worldwide race sanctioning organizations
• Marked with appropriate EPA noise emissions labels
• Designed for closed-course competition use only; not for street use
• Straight, single-core baffle
• Trapezoid shape muffler sleeve to maximize exhaust flow volume
• Not tested for EPA noise levels
• Can accept low-volume sound insert