Honda GX 390 & Predator 420
1 Piece pipe measuring 12" from flange surface to center of pipe.
Available in Three primary sizes.
 .960" I.D. for restrictor motors,   
 .990" I.D. for stock, 
 1.000"I.D. for open
 Secondary same on all   1.250" O.D.  with  a 1.312" end 3"long.    
 31"total inside length
 
NO BRACE KIT included... with this pipe being so long we encourage the spring joint to help it last longer and please try and brace it some way to your frame. even hose clamping to the frame but some sort of cusion mount will increase the lifespan of this pipe.