Dual Port vents both to the atmosphere & back into the air intake. TS-0203-1021 Apex Chassis high quality T-304 stainless steel

high quality T-304 stainless steel which is superior to 400 series and is backed by the Borla Million Mile Warranty

2017-2019 Ford F-450 Super Duty Cab & Chassis - Extended Cab

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Finishing off this exhaust system are dual 4-1/2 IN diameter 304 stainless steel clamp-on exhaust tips

Dual Port vents both to the atmosphere & back into the air intake. TS-0203-1021 Apex Chassis high quality T-304 stainless steelDual Port vents both to the atmosphere & back into the air intake. Ports with sequential timing allow quieter operation during normal driving, while getting all the benefits of a vent to atmosphere BOV under race conditions.