Note:This header does not have any kind of paint. Engine not included. 2 Lock washer and 2 nut included plus Gasket 1/4" thick flange, double weld in and out... 1/8 tubing wall heavy duty. 9" long (see photos for details) Pipe Diameter. OD: 26.86mm ID: 21.70mm Good for: Mini bikes, go karts, generators... multipurpose. This is custom made iron Header. weighs around 16.00oz. Remember this is not a Muffler, it make a lot of noise when it accelerates! * This been tested on Predator 212cc (6.5hp) Predator Hemi, GX160, GX200. also tested on Powerhorse 208cc (no tested on other engine) please check the measurements of your engine before you buy. center hollow to hollow 1"13 (see photos for details) Made in U.S.A.