Knobs of superlative quality in aluminum aeronautuco that confer to your bike a design highly accurate and linear. Thanks to the knurled surface is guaranteed a secure grip and reliable. Fitting First, remove from the handlebar the original knobs and the tiracavi. The accelerator cable custom is then fixed in tiracavi, grease is applied to the pivot point and the lid is screwed on the casing. Now place the throttle knob on the handlebars and tighten carefully the three locking screws. The other knob is then positioned on the left side of the handlebar and secured with the clamping screws. It is recommended to use a thread locker to medium strength for the assembly. Note: Required for mounting an accelerator cable custom. Recommended Extra: The knobs are perfectly compatible with the housing of the button "m-switch mini" of Motogadget and direction indicators "BL 2000" Kellermann.