does slip on exhaust affect performance

[shdwghst457_imp]

Pardon my ignorance on the subject, but how exactly does a slip-on work? I'm assuming it uses the stock header. What's the installation difficulty?

It is a differently shaped or sized or restricted muffler. Clamps to the stock head pipe in front down by the footpegs, bolts in back similar to the stock unit or with a extended mounting bar for some of the lower slip ons.

Compared to the stock unit, it usually makes more noise, can make more or less hp, always weighs less.

On the CB1100, does it involve cutting the stock exhaust? I'm not a fan of "permanent" mods. At that point I would keep the stock exhaust intact and maybe replace the whole system.