[Preston]

Found this on the AMA site.

MA Road Laws

Safety Helmet: Required by law
State Funded Rider Ed: Available for all eligible applicants
Eye Protection: Required by law for instructional permit holders unless equipped with windscreen
Daytime Use of Headlight: Modulating headlight permitted
Passenger Seat: Required if carrying a passenger
Passenger Footrest: Required if carrying a passenger
Passenger Age Restriction: None
Helmet Speakers: Prohibited to use or possess
Periodic Safety Inspection: Required by law
Mirror Left(L) Right(R): Required by law
Radar Detector: No Restriction
Turn Signals: Required by law
Muffler: Mufflers required.
Maximum Sound Level: Maximum allowable A-weighted sound levels as measured from 50 feet (Chapter 90, Sec. 7T): 82dBA at 45mph or less; 86dBA over 45mph. Stationary noise levels: Motorcycles required to be registered for operation on the ways of the commonwealth shall not exceed the following noise levels when operated at 1/2 redline speed--99dBA manufactured after 1/1/86--102dBA manufactured before 1/1/86 (540 CMR 3:00)
State Insurance Requirements: Compulsory Liability (Minimum Limits)(20/40/1)
Handlebar Height: Maximum of 15" above seat
Rider-Education Waiver: Skill Test
Accept Motorcycle Endorsement From Other States: Yes
Accept RiderEd Completion Card From Other States: N/A