Different Trend BQ9-405012RSL Exhaust Tip This tip is 12" long and has a 4" inlet diameter and a 5" outlet diameter. Tip is set at a 15% angle and is rolled over.The bottom end of the tip is a small drainage hole to prevent water buildup. No Welding needed, bolts right on to your exhaust 4" exhaust pipe Custom Made in the USA! Universal Fitment