The GPR M3 Inox exhaust delivers enhanced performance and sound for the Yamaha YZF R1 and R1M motorcycles. This Italian-crafted exhaust system features high-grade stainless steel construction and precision CNC-machined components. The M3 Inox exhaust reduces weight compared to stock systems. The exhaust includes a removable racing grill and specific mounting hardware for direct installation. GPR designed this exhaust based on their successful Moto3 World Championship experience. Yamaha YZF R1 R1M Exhaust Fitment Yamaha YZF R1 2017 2018 2019 Yamaha YZF R1M 2017 2018 2019 GPR Exhaust Information Removable DB Killer: Included Weight: 3.3 pounds (1.5 kg) Length: 9.84 Inches (250 MM) Finish: Brushed Stainless steel Link pipe: Included Catalyst: Not necessary for this product European Homologation: Yes Yamaha YZF R1 GPR M3 Inox Exhaust Details Enhanced Performance: The M3 Inox system increases horsepower and torque over the stock exhaust configuration Weight Reduction: At just 3.3 pounds, this exhaust significantly reduces weight compared to the factory system Premium Construction: Hand-brushed stainless steel body with high-grade welding ensures lasting durability Easy Installation: Includes specific mounting hardware and link pipe for direct bolt-on fitment Racing Heritage: Design based on GPR's successful Moto3 World Championship experience Sound Enhancement: Delivers a deeper, more aggressive tone while maintaining street-legal compliance Warranty Protection: Includes 2-year international warranty coverage for peace of mind