NO WELD REQUIRED! https://granatellimotorsports.com/i-30499923?q=ELECTRIC+EXHAUST 2.5" (63mm) Electronic Exhaust Cutout System - CompleteCNC 6061 Aircraft Quality Aluminum Body Construction"Smart Chip" Controlled Motor Offers "One Touch" Operation Rocker SwitchNo More Needing To Hold The Switch Which Usually Damages The Internal GearsStainless Steel Butterfly Plates & Blade ShaftsUnique V-band Clamp Allows Turndowns To Be Rotated 360^ For Ultimate AdjustabilityPolished Stainless Steel Turndowns Offer 45^ Slanted Discharge AngleHigh Torque DC Gear Reduction Driven Motor Insures Total Open and Total Closed Operation Everytime.Drive Gears Made of High Temperature Carbon SteelAll Hardware & Gaskets Included with Proper Wiring Harnesses