This Tomos muffler works well with the stock cylinder kit. It helps to increase the jet size to #54 but it is not necessary. It replaces Tomos A55, Tomos Streetmate, Tomos Arrow, Tomos Sprint, Tomos Revival, Workable sub for Tomos OEM# 223724- 227561-227571.Check specs before ordering.
Common applications include:
Tomos A55
Tomos A55