RE: CRRC Pro GF50i Plug issues
The Jen Feng plug for the CRRC 40 and 50cc engines are the same, the NGK equivalent is a BPMR6F, or Champion RDJ8J. The numbers on the Torch plugs in the 26cc engines directly cross to NGK,use an NGK plug of the same number...CMR7H, CMR5H etc.