[Code of Federal Regulations]
[Title 40, Volume 22]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR205.155]

[Page 130]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 205--TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS--Table of Contents
 
                         Subpart D--Motorcycles
 
Sec. 205.155  Motorcycle class and manufacturer abbreviation.

    (a) Motorcycles must be grouped into classes determined by separate 
combinations of the following parameters:
    (1) Engine type:
    (i) Gasoline--two stroke.
    (ii) Gasoline--four stroke.
    (iii) Gasoline--rotary.
    (iv) Other.
    (2) Engine displacement.
    (3) Engine configuration:
    (i) Number of cylinders.
    (ii) Cylinder arrangement (i.e., in line, opposed, etc.).
    (4) Exhaust system:
    (i) Muffler: (A) Type, (B) Location, (C) Number.
    (ii) Expansion chambers: (A) Location, (B) Size.
    (iii) Spark arrestors.
    (iv) Other exhaust system components.