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3. Adjustment of handlebar/stem
The pre-assembled handlebar was turned to the side for transportation. With a few, simple hand movements you can bring the
stem and handlebars into the correct riding position.
On most bicycles, the stem is rotated with the handlebars already mounted. You just have to loosen a few screws and tighten
them again to bring your handlebars (and all functioning shifters and brake levers) into the correct position.
These steps differ according to the design of your handlebars and stem. Choose the appropriate method for your bike
3.1 Ahead control bearing & assembly
Many modern bicycle models use the so-called Ahead system for fork, steering bearing and stem. The stem is clamped with two
outer screws on the continuous fork steerer and the headset bearing is adjusted with a screw from above.
fig. 3
fig. 1
fig. 2
Loosen the screw connection between
the stem and the fork steerer until the
stem can be rotated.
(fig. 1-2)
Align the stem in a straight line with the
front wheel.
(fig. 3)
Re-adjust the be-
aring clearance of the headset. For this,
please tighten the Aheadset star nut bolt
a quarter-turn and check whether the
bearing has clearance.
(fig. 4)
fig. 4
Carefully repeat step by step until you
detect no more play and the handlebars
can still be rotated smoothly and easily:
Now tighten the screw connection of the
stem / fork shaft with the appropriate
Allen key on the minitool.
(fig. 5-6)
fig. 5
fig. 6
Adjustment of handlebar/stem - Ahead control bearing & assembly
