"Participant hereby grants NHRA, its member tracks, and each
of their agents and assigns, full and unconditional permission
to collect and retain vehicles, parts of vehicles, equipment,
data (including performance related), or any other items used
in conjunction with participation that are owned by or in the
possession of participant or present at an event (collectively
“Items”), including such Items that may be relevant incident to
the investigation of an incident; the inspection or testing of such
Items; or for any other purpose. NHRA may exercise this right
to take and retain Items at any time when NHRA determines in
its sole and absolute discretion that such actions are necessary.
Participant fully releases NHRA from any liability whatsoever for
loss of, damage to, or destruction of any such items. When an
Item is suspected of being out of compliance with an NHRA rule,
or when an Item has been involved in an incident, NHRA may in
its sole and absolute discretion collect and retain such Items if
NHRA believes it necessary to do so to further investigate, make
a final determination, and/or preserve evidence, all in NHRA’s
sole and absolute discretion. At any time that NHRA collects and
retains Items, NHRA will try to safeguard such Items and return
such Items when NHRA has completed its work with them, but
NHRA makes no representations or warranties that the Items
will not be lost, damaged, destructively tested, destroyed or
otherwise affected. However, notwithstanding the foregoing
sentence, if NHRA believes that an Item should be retained or
destroyed, or indefinitely or permanently retained, to prevent
further use of such item in competition, NHRA may so retain or
destroy such Item. The rights granted to NHRA in this subsection
shall also apply to any NHRA member track if deemed necessary
by the member track officials."
This is from the NHRA rulebook, section 1 pages 17 & 18. I think it's silly they don't have a time limit on keeping the bike, but I unfortunately don't make the rules