Downpipes + Link pipe Fits: Yamaha FZS 600 Fazer 1998, 1999, 2000, 2001, 2002 2003 models - Developed in 2021 by the Black Widow Team to replace / upgrade your original. - Primary downpipes all use a 33mm internal to provide optimum system, no need for fueling modifications. Further tuning is possible for a less restrictive system. - TIG-welded by hand for smoother internals (reduced internal turbulence = improved gas flow) - Modern spring fit design allows for fewer internal welds. - Header / Down pipe Material : 304 grade stainless steel. - Designed to accept any silencer with a 51.5mm / 2inch diameter, including our own Black Widow cans - Two year Black Widow warranty.