The HKS black silencer is made to fit 120mm exhaust tips and provides a discrete sound-attenuating insert for aftermarket tips. It’s specified as a silencer sized for 120mm tips and intended to reduce exhaust volume without changing the tip itself. Use it when you want a quieter outlet from a 120mm tailpipe while keeping the visual appearance of a black tip.
HKS Black Silencer for 120mm Tip Exhausts