• Bolt extends the hex end of the bolt out of the frame rail, allowing you to remove the bolt without losing your socket or fighting the frame rail
• WM326 works with stock OEM Metric frames
• WM584-250 & WM584-300 trailing arm bolt for the new Speedway Metric chassis
• The 2-1/2" bolt works if you weld a 1/8" washer to the outside of the frame on one side and the 3" bolt works if you weld a 1/4" washer to the outside of the frame on one side