Description Aussiespeed Go Kart header pipe suits standard Animal & World Formula Briggs & Stratton Racing engines. This press bend pipe offers good scavenging & keeps velocity through the first part of the pipe high. A mandrel bent pipe has its place but in many instances a press bend header pipe does have increased velocity where torque & a lower power band is being used. The AussieSpeed header pipe is finished in black high temperature paint, has a welded support bracket, 6mm header plate & spring fit muffler coupling. The AS0277 exits along the rear bumper of the kart & will accept the AS0280 long style muffler. See Aussiespeed part number AS0286-17 as it is the replacement model