2
INSTALLING THE HEAD TUBE ISOZONE
3. While pinching the front IsoSpeed decoupler
between two fingers to hold the washers, carefully
guide it into the cavity in the head tube. Stop when
the holes in the decoupler are aligned with the
holes in the frame.
4. From inside the decoupler, insert a screw into the
drive side hole so that it points to the outside of
the tube.
5. Point the end of the elliptical nut with the chamfer
towards the hole.
CHAMFER
6. Place a finger inside the decoupler and push the
screw towards the outside of the head tube.
7. Hand thread the nut a few turns to the LEFT to
secure it for the next step.
IMPORTANT
Over-tightening can
cause damage.
8. The elliptical nut is an oval shape and matches the
oval shape of the hole in the head tube. When the
nut is hand tight, align the oval of the nut with the
style line of the head tube.
STYLE LINE
9
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