SP Racing F1 4" DP/MP: This Downpipe/Midpipe DP/MP combo is designed for the Treadstone cast log manifold as seen in the Sound Performance Torque Monster Turbo kit. ***The Midpipe in this assembly is purposely build a few inches shorter than where it meets the exhaust. An exhaust adapter is required in order to mate up to your exhaust. Proudly Made 100% in USA Full Stainless Steel construction. Includes 2 V-Band clamps. SP logo Tig-welded on. **Dump tube sold separately if recirculated is not chosen.