Like the "300" line, our "400" Level Exhaust Silencers are ideal where ambient noise is low and a high degree of silencing is required. This line can effectively reduce total
engine exhaust noise 32-42 dB. All "400" Level Exhaust Silencers can be mounted in any position and feature all welded construction, a durable double wrapped body and
an "F" mounting flange (standard in sizes 4" to 14"). Companion flanges are also available for 4" to 22".
