A SERVICE OF

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Bike Center Line
Rubymac
Stem Spacer
Aluminum
Contact
Surfaces
• Determine desired axle-to-handlebar height. This can be
achieved by either duplicating the position of existing
equipment or using the Specialized Adjustable Fit Stem,
used by select Specialized Authorized Dealers.
• Place desired stack height of headset spacers on
steerer tube (do not exceed 40mm). A Specialized Head
Tube Extender can be used to raise 40mm more if necessary.
• Choose stem spacer that corresponds to desired stem angle.
• Place spacer on steerer tube with desired angle facing
back of stem.
• Install SPECIALIZED Long Steerer Tube Plug in steerer tube.
NOTE: The Rubymac requires 38-40mm of exposed steerer
tube above the Rubymac stem spacer (including the Long
Steerer Tube Plug). Do not cut steerer tube until after
proper height and angle have been determined.
48mm
Recommended Torque:
100 in-lbf (11.3 N-m)
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Shim lip
• Choose the shim that matches the desired spacer (fig.4).
• Place the shim inside the stem against the back (hook the
shim lip under the bottom edge of the stem).
WARNING! Ensure that the shim tab fits the spacer notch!
2° & 4° ANGLED WEDGE HARDWARE OPTIONS
INSTALLING THE WEDGE HARDWARE