Performance Exhaust, Improved Sound and Flow.1.75in. Inlet, 4.25in. Muffler, ATV 8000 series Performance. USFS Approved.Features and BenefitsDelivers a Clean and Crisp Sound and Maximizes Flow. Bolt-on Installation. Dyno Proven Your MBRP performance gas exhaust system has undergone countless hours on our in-house Mustang 1100 AWD-SE Chassis Dynamometer, hundreds of miles on road and track and numerous tweaks and modifications to get the most out of your truck. From the vehicle specific muffler design to the fully mandrel bent tubing to minimal bend degree angles, your MBRP performance system gets exhaust out fast. An MBRP performance exhaust system is the starting point to getting the most from cold air intakes, programmers, modules and downloaders.Performance Muffler. USFS Approved Spark Arrestor.Bolt-On Yes/No: YesFuel Type: GasolineMajor: ATVMaterial: Black-Coated Aluminized SteelMinor: ExhaustMuffler Yes/No: YesProp 65 (C, R or CR): CRProp 65 - Short Label: Prop65warning.pdfProp 65 Yes/No: YESTitle: Muffler, ATV 8000 series PerformanceType: Slip-onUPS Able: YesVehicle Segment: Dirt