How do I register the CJ750 in the US. Vintage Military CJ750 is legal to be imported into the USA so long they are over 25 years old, however many states have different registration requirements, you should check with the DMV and Highway Patrol of your state. So far the only problems encountered with registering the CJ750 motorcycles have happen in CA due to the incompetence of the CA DMV and CHP. Be wary of the new Civilian CJ750 with the OHV engine, some of witch are new bikes build in 'Nanchang', this 'new' bikes are legal to import but must meet USA EPA and DOT standards or be modified to comply, otherwise they are required to leave the country within 30 days.