Operating instructions
HANDLEBARS STEM .............................................85
General notes on mounting and compatibility ....................87
Mounting AX-Lightness and engage Aheadset®-stems .............88
Mounting AX-Lightness and engage handlebars ...................90
Adjusting the Aheadset®-headset .................................93
Road racing bicycle – Adjusting the handlebars ....................95
Mountain bike – Adjusting brake lever/shifter units ................97
Mounting bar ends ...................................................... 97
Adjusting the handlebar height ................................. 100
Aheadset
®
-stems ........................................................100
Readjusting the Aheadset
®
by using spacers ................................100
Grips and bar tape ............................................... 102
Mounting the grips .....................................................102
Wrapping the bar tape ..................................................103
General notes on mounting
and compatibility
Before you start mounting make sure the stem you
have chosen has a clamping diameter matching the
AX-Lightness and engage handlebars. The same ap-
plies to both the stem and the steerer tube.
Our AX-Lightness road racing handlebars have a
clamp diameter of 26.0 mm.
The clamp diameter of our AX-Lightness mountain
bike handlebars is 25.4 mm (a).
The clamp diameter of all engage handlebars is 31.8
mm (b).
Most steerer tubes measure 1 1/8“, which corresponds
to 28.6 mm. The AX-Lightness and engage stems are
designed for these clamp diameters.
Only use brake levers and shifters with symmetrical
clamps (c).
The same applies to bar ends on handlebars de-
signed to be tted with bar ends. Bar ends must have
a symmetrical clamp, as well. Be sure to mount bar
ends only on handlebars approved for bar ends. Ob-
serve the product descriptions and type labels on the
handlebars.
Do not mount aero handlebars, also referred to as
clip-ons, on standard AX-Lightness and engage han-
dlebars. If you need aero handlebars, get in touch
with us. You will obtain from us custom-made han-
dlebars with special reinforcements.
g
Asymmetrical clamps or handlebar grips
fastened with a single bolt etc. can damage
AX-Lightness and engage handlebars.
g
Make it a rule to use AX-Lightness car-
bon assembly paste to achieve maximum
clamping with minimum torque values.
g
If you mount new AX-Lightness
and engage handlebars to an
existing stem, check the old han-
dlebars carefully for scratches,
abrasion marks and notches after
removal. Damage in the clamping
area indicates insucient process-
ing or defective design of the stem
in these areas.
86 87
Handlebars - Stem
b
a
c










