Yep gotta get tti s

My TTIs never need the bolts tightened.My TTIs have never burned through. They never burned out a gasket.They went through 5 winters and 15 summers. At about the 10th year the left side began to leak where the top 2 tubes enter the collector. I attributed that to the winters and the salt.Your results may vary. I bought them for the ground clearance. I have never banged them on anything, despite trying.The rest was a bonus.