This is a top quality Japanese made C3 bearing for crank shafts on the below makes/models. OK for up to 9,000rpm in regular use, will handle higher RPM for short periods. This is for ONE bearing, each engine uses TWO of these. Also get your seals and gaskets at the same time!
Adly Jet 50, Silver Fox 50 (SF-50), Gatecrasher (GTC-50), Roadtracer (RT-50)
Chinese 1PE40QMB (2 stroke horizontal 50cc)
CPI Popcorn, Oliver, City, Hussar
CMG Hussar, SS50 etc
Yamaha Axis, Jog (all horizontal 2 stroke engine), Vino (all 2 stroke) etc
As used on the Scootling liquid cooled Adly Silver Fox project (up to 12,000rpm occasionally)