That shape often known as 巴西越野 (NXR125 Bros...)
From https://www.youtube.com/watch?v=iJ2lsa6P4HI we knew it's 69mm CB (17mm pin https://item.taobao.com/item.htm?id=533985048419 that unlike Honda 15mm / Cam chain = 102L unlike Honda which is 104L) . Anyways tips from chinariders.net (Hawk, Bashan/ Taotao TR7...) is similar enough as ref.
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Body: XR125
http://kjaer.com/media/1018323/XL125...Section-A-.pdf | http://kjaer.com/media/1017417/XL125...-addendum-.pdf OR NXR1... Bros in Spanish/ Brazilian Portuguese
Engine: CRF230 is good enough as ref...