INSTRUCTION GUIDE
MULTI-POSITION STEM
THIS INSTRUCTION GUIDE CONTAINS IMPORTANT INFORMATION.
PLEASE READ CAREFULLY AND STORE IN A SAFE PLACE.
The Specialized stem you have chosen is among the finest products available in cycling. This stem requires particular care for proper installation.
WARNING! Please read the following instructions. Bicycle assembly is a complicated task, which requires training and experience. If you have
any doubt regarding your mechanical ability and/or installation of this product, visit your local authorized dealer. Specialized recommends that
the stem be installed using a torque wrench, by a qualified mechanic. Failure to follow this warning may result in serious personal injury or death.
Please read the following warnings. Failure to follow the warnings in this instruction guide may result in a catastrophic failure of Command
Post, resulting in serious personal injury or death. This phrase may not be repeated in connection with each and every warning.
PREPARATION
„„ Inspect the fork and stem to ensure that there are no burrs or sharp edges that can damage the surfaces in contact with each other. Remove any
burrs or sharp edges using fine grit sandpaper.
„„ All edges of the stem in contact with the steerer tube should be rounded out to eliminate any stress points.
WARNING! Burrs and sharp edges can damage the carbon and alloy surfaces of the components. Any deep scratches or gouges in the
stem, fork or handlebar can weaken the components.
The Specialized multi-position stem has near-continuous surface area, which provides a very high amount of contact with the steerer tube to help to
evenly distribute loads.
1
Full contact with steerer tube
Large hole, limited surface area
2
48mm
28mm
SPECIALIZED STEMS
WITH SHIM
NON-SPECIALIZED STEMS WITH
LARGE STEERER TUBE HOLE
23.6mm
The Specialized multi-position stem offers a variety of stem angles and lengths. Each stem has the choice of a 0°, 2° or 4° shim between the stem and
the steerer tube. For example, a 12° stem has the option of a 0° shim (+/- 12°), a 2° shim (+/-10° or +/-14°), or a 4° shim (+/-8° or +/-16°).
Choose the desired stem length and angle, then fine-tune the position with the desired shim angle and shim position.
STEM DESCRIPTION
S-Works Pro-Set Road Stem, 12°
0° SHIM ANGLE
2° SHIM ANGLE
4° SHIM ANGLE
STEM LENGTHS
+/-12°
+/- 10° / +/- 14°
+/- 8° / +/- 16°
75/90/100/110/120/130/140
S-Works Pro-Set Road Stem, 17°
+/-17°
+/- 15° / +/- 19°
+/- 13° / +/- 21°
75/90/100/110/120/130/140
Pro-Set Road Stem, 12°
+/-12°
+/- 10° / +/- 14°
+/- 8° / +/- 16°
75/90/100/110/120/130/140
Pro-Set Road Stem, 17°
+/-17°
+/- 15° / +/- 19°
+/- 13° / +/- 21°
75/90/100/110/120/130/140
Comp-Set Road Stem, 12°
+/-12°
+/- 10° / +/- 14°
+/- 8° / +/- 16°
75/90/100/110/120/130
Comp-Set Road Stem, 24°
+/-24°
+/- 22° / +/- 26°
+/- 20° / +/- 28°
75/90/100/110/120/130
Pro-Set Mtn Stem, 12°
+/-12°
+/- 10° / +/- 14°
+/- 8° / +/- 16°
60/75/90/105
17 STEM, + AND - POSITIONS
24 STEM, + AND - POSITIONS
°
12 STEM, + AND - POSITIONS
75
75
0°
m
Ste
17°
m
Ste
+2
8
6°
+2 4°
° = +2 2°
+2 ° = = +2 0°
0 ° +2
-2 ° =
-4
110
10
75
90
°=
13
12
0°
°
+4° = -8 °
+2° = -10
0° = -12°
-2° = -14°
-4° = -16°
12°
1°
+2 9°
° = +1 °
+4 2° = +17 °
+ ° = +15 °
0 = 13
°
-2 ° = +
-4
0
0
+4
0
14
0
13
0
12
0
11 0
10 0
9
°
+16 °
° = +14
+4 ° = +12°
2
+ ° = 10°
0 =+ °
°
-2 ° = +8
-4
14
13 0
12 0
0
11
10 0
9 0
0
0
0°
+4° = -13°
+2° = -15°
0° = -17°
-2° = -19°
-4° = -21°
tem
S
24°
+4° = -20°
+2° = -22°
0° = -24
-2° = -2 °
-4° = -2 6°
8°
NOTE: Each Specialized Multi-Position stem can be inverted into a positive or negative position, as shown in the above table and illustrations. The
angled shim must ALWAYS be placed with the lip on the bottom of the stem’s steerer tube clamp, as shown in the illustrations.
Page 1 of 2
INSTALLATION
If the fork has a carbon steerer tube, install the Specialized Long Expander Plug (Fig. 2) in the top of the fork’s steerer tube. Recommended torque is
80 in-lbf (9.0 N*m).
WARNING! Carbon fiber steerer tubes require the use of the Long Expander Plug assembly supplied with the fork (Fig. 2). Do not use a
star nut, as it can damage the inside surface of the steerer tube. Damage to the steerer tube can result in failure, causing serious
personal injury or death.
1.
Install the fork and headset according to the fork
manufacturer’s instructions.
2. Install the headset spacers and the stem. Unless
the desired stem height is already determined, it is
recommended that the initial installation of the fork
be done with the maximum allowed stack height
(40mm) to allow the greatest range of adjustability.
Spacers can be placed above or below the stem to
adjust your position. Once a more precise stem height
is determined, a second cut can be made to eliminate
any spacers that may have been placed above the
stem to achieve the desired position.
WARNING! Do not install more than 40mm
(1.5”) stack height of headset spacers (Fig. 3).
Exceeding this limit can compromise the
strength of the steerer tube.
3
3mm
LONG
EXPANDER
PLUG
SPACERS
ABOVE
STEM
SPACERS
BELOW
STEM
40mm
max
LONG
EXPANDER
PLUG
Head
Tube
Head
Tube
WARNING! Do not permanently place stem spacers above the stem (Fig. 3). Placing spacers above the stem defeats the purpose of the
expander plug’s ability to support the steerer tube and stem.
NOTE: For carbon steerer tubes, do not apply grease to the interface between the stem and the steerer tube.
3. Install the stem and the top preload cap.
NOTE: Always place the shim with the lip underneath the steerer tube clamp, with the shim slot in line with the steerer tube clamp slot.
NOTE: Use an offset top cap, with the top cap hole rotated to match the position of the shim, so that the top cap hole is in line with the steerer tube plug
threads.
WARNING! Do not twist the stem onto the carbon steerer tube. This can result in damage to the composite surface, which can render
the fork unsafe.
4. Adjust the headset to eliminate any free play, make sure that the fork still rotates freely.
5. Align the stem with the fork.
6. Tighten the stem’s upper and lower steerer clamp bolts in an alternating pattern. Increase torque in 5 in-lbf (0.56 N*m) increments, up to the
recommended torque of 40 in-lbf (4.5 N*m).
WARRANTY
For the complete warranty provisions, please refer to the Specialized Owner’s Manual or www.specialized.com.
SPECIALIZED BICYCLE COMPONENTS
15130 Concord Circle, Morgan Hill, CA 95037 (408) 779-6229 Page 2 of 2
Please note all instructions are subject to change for improvement without notice.
Please visit www.specialized.com for periodic tech updates.
IG0299 Rev.A, June 2010