propertiescolour: blackField of application: 2-strokeModel: Carrera R4With flawless welds and a high-quality Max Pro aluminum rear muffler, the exhaust has an attractive racing look. The shape and volume of the sound box are designed to achieve maximum performance in the medium to high speed range with a particularly wide speed range. In practice, this means that the R4 delivers impressive power even at medium speeds and maintains this power well into the upper engine speed range.Note: Not allowed in road traffic.About the manufacturer YasuniYasuni - excellence in exhaust systems Thanks to its forty years of experience, Yasuni stands for unsurpassed quality and outstanding performance in the production of exhaust systems for motorcycles and scooters. As a premium manufacturer, Yasuni f.