108
PART 2
Seat Post Insert Limit
138692 Rev 0 (04/22)
Section A. Important Safety Information
GT Bicycle Owner’s Manual
Frame Minimum Seat Post Insert
Depth
SEAT POST
SEAT TUBE
MINIMUM
SEAT POST
H
(for frame)
TOP TUBE
Figure. Seat Post Minimum Insert
What is it?
Some frames have designs that require no less
than a specified length of the seat post to be
inserted inside the frame. This requirement is
more common on high performance carbon fiber
mountain bikes, but can exist for other designs.
The frame and the seat post work together,
support each other. Inadequate overlap of these
parts can lead to failure in high load situations.
Such a minimum seat post insert limit will be
marked on the frame, via a frame decal and/or in
the owner’s manual supplement as “minimum
seat post insert” in the Geometry/Specifications
section.
How Does It Affect My Bike?
You must always have at least the required
minimum length of seat post inserted inside the
frame.
WARNING
If your frame has a minimum seat post insert
depth, make sure the specified length seat
post is installed inside the seat tube at all
times. Ask your Authorized GT Dealer about
this specification.
Failure to insert the seat post correctly can
improperly stress the frame and/or the seat
post causing the frame to break while riding.
YOU MUST ALSO BE AWARE THAT bicycle
seat posts are permanently marked by the
manufacturer with a “MINIMUM INSERT” line
on the seat post itself. You must not rely on
this marking as an indication of the proper
MINIMUM SEAT POST INSERTION DEPTH.
You can be severely injured, paralyzed
or killed in an accident if you ignore this
warning.