Polini Racing Big Evolution 70cc Exhaust TWD Minarelli Horizontal

Polini Racing & replacement exhaust systems always stand for high-quality workmanship & top performance. The Italian manufacturer tests and develops its systems in its in-house development department, always placing the highest demands on its products.

ATTENTION! The Evolution exhaust system can only be installed if the side stand is removed.

The Big Evolution exhaust systems were specially developed for the Big Evolution cylinder kits to extract the last performance reserves from the engines. To withstand the higher compression of these cylinders, they use a special exhaust flange with 3-point mounting. Therefore, the Big Evolution exhaust systems can only be used in conjunction with the corresponding Big Evolution cylinder kit. In addition, the included bracket also fits the optionally available Polini Torsen WD additional swingarm. This provides the necessary stability for highly tuned engines by relieving the crankcase.