The revolutionary Twinwall® handlebar is an oversized diameter 1 1/8” (28.6mm) handlebar which utilises two tubes, one within the other, borrowing principles from aircraft design to give the best combination of lightness, strength and safety.
Since their introduction in 1998, the Twinwall has been the handlebar of choice for more professional race teams and has helped more riders win championships than any other handlebar in the world.
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Renthal Twinwalls are 1 1/8" (28.6mm) in the centre section and should only be used with 1 1/8" (28.6mm) handlebar clamps.
It is important if you are installing the handlebars yourself to have the factory service manual specific to your model. This will guide you through the steps and give you all the necessary torque specs and correct cable routing.
If you are not confident in your mechanical ability, please have your handlebars installed by a professional.
It is very important when fitting the handlebars that any sharp edges are removed from the handlebar mounts where they come in contact with the handlebar (see illustration 1). Failure to remove these sharp edges could lead to a fatigue failure.
To make sure that the handlebar is aligned centrally use the laser marked positioning grid for centre and rotational location (see illustration 3). The positioning grid also allows you to replace the handlebars in exactly the same position should you need to remove the handlebar from the bike for any reason.
IMPORTANT WARNINGSIn the event of any crash, it is a wise precaution to make sure that the handlebars have not been damaged. Check also that none of the controls have come loose and that the handlebar has not moved in the triple top clamps.
In the event of a severe crash the handlebar must be replaced. This is because in a crash the handlebar is the most stressed component on the motorcycle.
Do not attempt to straighten the handlebar
Do not modify the handlebars.
Do not centre punch or in any way mark the handlebar. Physical marking of the handlebar can lead to stress raisers.
Do not clean the handlebar with any form of metal polish or concentrated cleaning fluids as this could cause damage to the anodized finish and possibly corrosion if allowed to enter the inside of the handlebar.
