Here's the one that I bought, twice now :
https://www.amazon.com/Mophorn-Converter-2HP-7HP-Replacement-CVT/dp/B019SL0LUU/ref=sr_1_3?crid=1PCIL51BGGQAK&keywords=mophorn+torque+converter&qid=1659703771&sprefix=mophorn+torque,aps,849&sr=8-3&th=1
All these Chinese converters are about the same - So just pick any one for a 40-41 chain.
The one thing is, if your bike is newer than mid 2016, the engine has a 5/8" / 16mm crank shaft, and most of the converters are for a 3/4" shaft.
You either have to sleeve the shaft to 3/4", swap cranks (many folks do that), or buy a more expensive converter:
https://www.gopowersports.com/coleman-200-series-torque-converter-kit/
Lots of on-line info on installing one - Not a big deal to do it.