The GPR Trioval exhaust system delivers superior performance for BMW R100GS motorcycles. This slip-on exhaust system enhances engine sound while maintaining legal noise limits. The exhaust features polished 304 stainless steel construction with a 100mm x 130mm diameter. GPR manufactures this exhaust in Italy with precise welding techniques. The system includes a specific link pipe and mounting hardware for direct installation. The lightweight design improves motorcycle handling and performance. BMW R100GS Exhaust Fitment BMW R100GS 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 GPR Exhaust Information Removable DB Killer: Included Weight: 4.29 pounds (1.95 kg) Length: 15.75 Inches (400 MM) Finish: Polished Stainless Steel Link pipe: Included Catalyst: Not necessary for this product European Homologation: Yes BMW R100GS GPR Trioval Slip-on Exhaust Details Enhanced Sound Quality: GPR's Trioval design produces a richer exhaust note while staying within legal sound limits Improved Performance: Optimized exhaust flow increases engine efficiency and power output compared to stock systems Premium Construction: Hand-polished 304 stainless steel ensures lasting durability and corrosion resistance Simple Installation: Complete mounting hardware and specific link pipe enable direct bolt-on fitment Weight Reduction: Lighter construction than stock exhaust improves motorcycle handling characteristics Quality Assurance: Italian manufacturing backed by a 2-year international warranty guarantees product satisfaction