Yamaha YXZ weld in bungs. These are great for the DIY roll cage builder. We have taken the stock YXZ bungs and reproduced them using 1018 steel and CNC machined them for a perfect fit. These bungs will work with 1.75″ outside diameter tubing with a .095 or .120″ wall thickness. We machine a small step in these to fit either size tubing. You are able to use your stock bolts. We CNC machine these to tight tolerances for a tight fit on your stock bungs.