Pegs can be installed on your BMX bike to allow you to do tricks that aren't possible without them. Some of the tricks that can be performed with pegs include grinds and pogos. Pegs are not typically used for BMX racing or dirt jumping, but instead, for freestyle flatland and street BMX. One to four pegs can be installed on a BMX.
Remove the axle nuts and washers from each wheel using a ratchet and deep well socket.
Install the 14mm to 3/8 inch adaptor washers by screwing them into the axle–if adaptor washers came with your pegs. Screw the peg's anti-roll pins into the peg using a 5mm Allen wrench if your pegs came with anti-roll pins. This step can be skipped if your pegs didn't include adaptor washers or anti-roll pins.
Insert the pegs over the axle, fully covering it. Turn the peg so that the anti-roll pin–if included–is positioned inside of the dropout slot.
Place the axle nut in the end of your deep well socket. Tighten the axle nut into the axle by turning your deep well socket clockwise.
Align the back wheel so that the tire is not rubbing against the bike's frame or brake pads. Inspect the bike's chain to make sure that it's not excessively loose or tight, and adjust the wheel's position as necessary. Tighten the axle nut completely so that the wheel is securely bolted to the bike.
Not all pegs come with 14mm to 3/8 inch washer adaptors or anti-roll pins. If your pegs didn't include these items, they can be installed without them.