Arrow Racing Stainless Steel Exhaust Collectors | Kawasaki ZX-4RR-71783MI 

Collectors and pipes are one of the most important components of an exhaust system, making it possible to reach very important gains in terms of power and torque.

Made in AISI 304 stainless steel with the irreplaceable “touch” of Arrows master mechanics and engineers. R&D addresses efficiency and performace by paying careful attention to diameters, sections, bends, section changes, welds and layout. These aspects are designed and developed on the bike to create a product with high performance, durable, reliable and the unique Arrow style.

Depending on engine configuration and spark timing, the layout can differ to address unique needs: that’s why we speak about different schemes like 4:2:1, 4:2:2, 2:1:2, 4:2:1:2 and so on. To follow one scheme or another is a most important decision, to be taken at the very start of the project, and it will influence all the other steps.
To avoid unnecessary drag on the flow of exhaust gases, all junctions and connections are made using CNC-machined parts. For the same reason, all welds need to be perfectly made and non-invasive, avoiding any section reduction for the flow of gases.