Very little info, just found this while looking for a Sherco Factory 250. https://dirtbikemagazine.com/sherco-2019-models-released/ The Sherco TY125 is an entry-level trials bike for 2019. The trials bike line is headlined by an entry-level 125 four-stroke. The TY125 is designed to accommodate younger riders with its air-cooled motor. The bigger bikes have changes to the clutch, head, crankshaft. The 300 head gets an interchangeable dome to change the motor’s overall state of tune. I'll look around for more information, cuz I'm curious. But does anyone know more about this?