Polini torsen swing arm for Yamaha Aerox mopeds, this brace is inspired from Moto GP racing and is designed to add extra strength to engine cases.

It is very well suited to modified engines which have enough power to easily damage un-strengthened engine cases. Due to the increased strength it also aids in better handling and improved stability.

It can be used with most exhaust systems with modifications, but is only a direct fitment with the Polini Big Evo, Race and Team exhaust.

Polini 172.0016