10
STANDARD 31.8MM STEM:
Fig.4: Determine the desired stem
M
length and angle, then place the Specialized aero handlebar
N
into
the stem.
Fig.4: Orient the handlebar position horizontally, then torque the stem faceplate bolts to the manufacturer’s
specifications.
WARNING! Do not grease the interface between the stem and the alloy handlebar. Grease may
cause the handlebar to slip, which can result in a loss of control.
All edges of the stem in contact with the steerer tube should be rounded out to eliminate any stress points.
WARNING! Inspect the stem and steerer tube to ensure that there are no burrs or sharp edges.
Remove any burrs or sharp edges using fine grit sandpaper.
SPECIALIZED BRANDED STEMS:
Specialized multi-position stems are equipped with a shim and offer a near-continuous surface contact, which helps to
evenly distribute loads (fig. 2).
Specialized carbon road stems and Barmac Systems have built-in continuous surface contact, which helps to evenly
distribute loads.
Specialized SL stems with large bore holes are specifically designed in conjunction with Specialized forks with
carbon steerer tubes, to ensure proper load distribution (fig.2).
NON-SPECIALIZED BRANDED STEMS:
As we cannot test every combination, Specialized recommends against the use of non-Specialized branded stems
on Specialized carbon steerer forks equipped with Specialized steerer tube plugs, unless specified as original
equipment (fig.2).
WARNING! Non-Specialized stems may not be compatible with Specialized carbon steerer forks.
Failure to follow this warning could result in serious injury or death.
1
INTERNAL WEDGE CLAMPEXTERNAL SLOTTED CLAMP
2
SPECIALIZED MULTI-
POSITION STEM
(WITH SHIM)
SPECIALIZED SL STEM
WITH LARGE STEERER
TUBE BORE
NON-SPECIALIZED-BRANDED
STEM WITH LARGE STEERER
TUBE BORE
Full contact with
steerer tube
SL stem, with tested
surface area
Large hole, limited
surface area
Specialized recommends using an external slotted clamp style stem. Internal wedge clamp style
stems can cause damage to the steerer tube if improperly installed (fig. 1).
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