Arrow 72166PD Racing Collector Pipe for Honda Africa Twin 1100/Adventure Sport 20-23Arrow Exhaust Headers Honda Africa Twin ADV Sport Not all exhaust pipes are made equal, the Arrow Exhaust Header bears all of Arrows experience accumulated from world class racing. That experience has lead Arrows to fine tune each part of their design and manufacturing processes. Everything from pipes diameters, sections bends, components, welding and layout are carefully tested to produce a product with high performance, reliability and last but not