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Make sure the handlebar-stem-combination is approved by the
handlebar and/or stem manufacturer.
Check whether the handlebar clamping surface of the stem is
free of sharp edges (a). Ask your BMW partner for professional
advice.
The bolted connections of stem and handlebars have to be
tightened to the prescribed tightening torques. If you disregard
the prescribed values, handlebars or stem may come loose or
break. Use a torque wrench and never exceed the maximum
tightening torque! You will nd the prescribed values in chapter
“Recommended Tightening Torques”, directly on the com-
ponents and/or in the manuals of the component manufactur-
ers.
11.2.1 Adjustable Stems.
There are various solutions for adjusting the tilt of the front part of
adjustable stems (b):
Some designs use bolts on the sides of the joint, others have bolts com-
ing from above or below, and some versions are equipped with additional
locking mechanisms or adjusting bolts.
Ask your BMW partner to explain you both function and adjust-
ment of your stem or let him do that work.
Release the side clamping bolt at the joint (c) by two to three turns at the
most, i.e. without unscrewing it all the way. If you still cannot move the
stem, it is being held in place by a ratchet or integrated locking mecha-
nism. If the stem is tted with a locking mechanism, release the holding
bolt located on the top or bottom side (d) of the stem a little. In the case
of a ratchet mechanism you will nd the bolt on the side.
Adjust the stem according to your needs.
Gently retighten the bolt of the locking mechanism, until it engages.
Bolts located on the side only have to be tightened gently. If there are
no side bolts, you have to tighten the bolt of the locking mechanism. If
the stem of your bike has a ratchet mechanism, make sure its surfaces
engage snugly as you tighten the side bolt. Retighten the bolt on the
side of the joint, if necessary.
Any bolts located on the top or bottom side of the stem have to be
released as far as necessary to disengage the ratchet mechanism and to
move the front part. It is usually not necessary to remove the bolts com-
pletely. Retighten the bolts after setting the stem to the desired height.
b
c
da
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