Cheater bars are usually used to break free threaded pipe, screws, bolts, and other fasteners too difficult to remove with a ratchet or pipe wrench alone.
They are also commonly used to operate valves. ¹⁾

The cheater bar allows higher torque with the same force by:
torque = radius × force

A cheater bar (snipe, a pipe extension or an extension pipe) is slipped over the handle of a wrench to extend the length of the handle.
The extra length adds leverage and allows you to pull with the same force to add extra turning power to the wrench.
A cheater bar is generally not needed while using a torque wrench on a Sportster.
The wrench itself is designed for the intended torque range that it works in.
There is change of torque applied to the wrench if using a cheater bar on it.
You will lose 'feel' when using one. If using it on a clicker wrench, you can easily over-torque before the wrench clicks.
Avoid using a cheater bar on a torque wrench unless it's necessary.
The bar over the end can move the set value on a clicker wrench while you're using it.

Problems with using cheater bars: ²⁾
OSHA, MSHA, CCOHS, EU-OSHA, etc. strictly prohibit or discourage the use of cheater bars due to the extreme risk of injury or death to users and bystanders.
If the component frees suddenly, you can become a projectile propelled into whatever is in the “line-of-fire”.
This could (and has) resulted in falls, impacts, punctures, and other injuries.
The cheater bar itself can become a catapult.
Heat is produced whenever a bolt is tightened or loosened. The faster you turn, the more the heat.
A cheater bar can quickly heat (or overheat) a fastener or the opposing threads where the fastener resides.

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A breaker bar is a lengthy, non-ratcheting tool intended for use with sockets. It works on the same principle of length as a cheater bar.
The primary function of this long tool is to generate more torque than a standard socket wrench when you apply the same amount of force.
Breaker bars can range from 10“-38.5” in length.
These tools are useful for turning sockets and loosening any nuts and bolts that are tight or have become stuck. They are much more safer than a cheater bar.

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