2021 Kx450 Pro Circuit Exhaust Oleh Johan Februari 16, 2023 Posting Komentar 2021 Kx450 Pro Circuit Exhaust . Just bought a 2021 kx 450xc and am desperately trying to find an exhaust pipe or after market end cap with a spark arrestor. Pro circuit dirt bike exhaust shop for ex… 2021 circuit exhaust kx450 pro