Description AussieSpeed Clone & Honda GX series 4 stroke Gokart engine performance anti reversion staged pipe through flange design header pipe. This 1 inch staged header pipe suits 6 & 6.5 Honda & Honda copy & clone go kart engines & increases performance & torque for use on both bitumen & dirt road type courses fun & social go karts where where torque & power is required over a wide band.This pipe has been designed to be used on standard governed engines through to mildly modified engines up to 7000 rpm. The AussieSpeed AS0312 go kart performance header pipe is designed to be used with AS0280-32 long style quick fit muffler. you are purchasing the AussieSpeed Power Pipe only. The muffler needs to be purchased separately The AussieSpeed Honda & Clone Performance header pipe features a welded mounting strap, laser cut flange & is recommended that a mounting kit be used to support the muffler due to its long design