Girvin Tech Bulletin
VECTOR 1 FORK STEERER TUBE
In the event of a crash, there could be damage to your
Vector Fork that may not be visible. Damaged forks can
be extremely dangerous, and can result in failure during
use and severe injuries. After a crash, take your fork to
an authorized Girvin / Pro-Flex dealer or other qualified
technician to verify its structural integrity.
The steerer tubes on pre 1995 Vector 1 forks can fail if subjected
to a heavy frontal impact. Typically, the impact necessary to damage
the steerer tube will also cause other component damage such as:
bent fork legs, ovalized headset bearing cups, and damaged stems.
While steerer tubes may fail to the point of being unusable during
a massive crash, a bigger concern is the possibility of undetected
steerer tube damage from a lesser impact. Any fork which has been
subjected to a frontal impact should be inspected before riding further.
Any indication of headset looseness, bent stem, or bent steerer tube
could be evidence of internal damage. In such a case, it is imperative
that the steerer tube and stem be inspected carefully before riding
the bicycle further.
Girvin strongly recommends that your Vector fork be serviced by a
Girvin / Pro-Flex dealer or other qualified technician. This bulletin
is for a qualified technician who possesses proper training and tools.
Improperly serviced forks can be extremely dangerous, and can result
in failure during use and severe injuries.
In the event of a crash, there could be damage to your Vector Fork
that may not be visible. Damaged forks can be extremely dangerous,
and can result in failure during use and severe injuries.
After a crash, take your fork to an authorized Girvin/Pro-Flex dealer
or other qualified techincian to verify its structural integrity.
Read your owner's manual carefully before attemting to service your
Vector fork. It is important that you follow proper procedure to ensure
maximum performance and safety.
1. Remove stem and inspect the upper end of the steerer tube for
visible cracks or bending. Replace steerer tubes with either
2. Inspect the clamp that attaches the stem to the steerer tube.
Look at the underside of the removed stem to see if the clamp
has been bent or stretched into an oval. In either case, the
stem will not provide a close fit around the steerer tube, which
may cause a new steerer tube to fail. If the stem is damaged,
replace it with a new one.
Note to Dealers: Please post this notice and inform your customers of its contents. In the event that a customer needs replacements for damaged stems or steerers, Girvin Inc. will ship new parts immediately. Dealers will be billed for said parts. Dealers will receive credit for all replacements when Girvin Inc. receives all damaged components.
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