[Code of Federal Regulations]
[Title 16, Volume 2]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 16CFR1512.15]

[Page 562]
 
                     TITLE 16--COMMERCIAL PRACTICES
 
             CHAPTER II--CONSUMER PRODUCT SAFETY COMMISSION
 
PART 1512_REQUIREMENTS FOR BICYCLES--Table of Contents
 
                          Subpart A_Regulations
 
Sec.  1512.15  Requirements for seat.

    (a) Seat limitation. No part of the seat, seat supports, or 
accessories attached to the seat shall be more than 125 mm (5.0 in.) 
above the top of the seat surface at the point where the seat surface is 
intersected by the seat post axis.
    (b) Seat post. The seat post shall contain a permanent mark or ring 
that clearly indicates the minimum insertion depth (maximum seat-height 
adjustment); the mark shall not affect the structural integrity of the 
seat post. This mark shall be located no less than two seat-post 
diameters from the lowest point on the post shaft, and the post strength 
shall be maintained for at least a length of one shaft diameter below 
the mark.
    (c) Adjustment clamps. The seat adjustment clamps shall be capable 
of securing the seat in any position to which it can be adjusted and 
preventing movement of the seat in any direction under normal conditions 
of use. Following the road test, Sec.  1512.18(p) (or the sidewalk 
bicycle proof test, Sec.  1512.18(q), as applicable), the seat clamps 
shall be tested in accordance with the seat adjustment clamps and load 
test, Sec.  1512.18(l).