A twin exhaust system with 2 cylinders exhausting on each side was initially considered. However due to physical constraints of frame members and other vehicle components it was only possible to implement a single exhaust system on right hand side. When choosing a silencer the noise restriction of 110db imposed by FS rules had to be considered. A baffled Suzuki silencer was chosen as its specifications satisfied these requirements. However noise emissions below 110db from the entire exhaust assembly still had to be validated.