GPR BMW.88. TRI Trioval exhaust for Bmw R 100 Gs 1987-1996 is a high quality motorcycle silencer, ideal for those who want to improve the performance, sound and aesthetics of their motorcycle. This muffler, made in steel with sleeve Polished 304 Inox, has a design Ovale with Polished stainless steel end cap.The GPR slipon is approved with link pipe and removable db killer, making it perfect for this motorcycle.