It is used when you need more clamping power on a medium HP built bike. They are simple to use and you can ride them on the street. I have seen them hold 350+ HP and they are pretty easy to set up if you have a quick access cover. Just talk to the manufacturer or ask soem folks on here:2thumbs:
Depends on what you are running. Usually a nut and bolt on each arm is good but if you are making any significant power you may need more. Also depends on the track. But that would be a good start.
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