The 5200 could be correctable. (I'm not near my laptop, I can check later). Or either wait for the courtesy notice OR check with the court.
Officers are trained to visually estimate speed (and typically fairly accurately) and barring a challenge from you supported by some evidence or reasoning that he was wrong, it is typically acceptable by Cal;ifornia courts.
And???? officers are above the law!!!
Kidding, stop and think about it; as he chased you, he was speeding as well, but that does not negate your speeding violation.
He amended the no plates/registration violation from CVC section 5200 to CVC Section 5200A. But see by doing so, he might have screwed up.
Question is, how many plates does the DMV issue for a motorcycle?
Here is CVC 5200(a) & (b)
5200. (a) When two license plates are issued by the department for
use upon a vehicle, they shall be attached to the vehicle for which
they were issued, one in the front and the other in the rear.
(b) When only one license plate is issued for use upon a vehicle,
it shall be attached to the rear thereof, unless the license plate is
issued for use upon a truck tractor, in which case the license plate
shall be displayed in accordance with Section 4850.5.