Cycling

Cycling (사이클링) is the basic attack feature loaded onto all Action Bikes. They act as the primary long-range combat weapon for Biklonauts who do not have a Chaos Blaster.

Attributes
Cycling is activated by a button on the Action Bike's handle. Each Action Bike has a different type of Cycling, though most involve the front wheel generating energy wheels and launching them. The Action Bike does not have to be moving for a Biklonaut to use Cycling, but faster pedaling does result in the attack getting stronger.

Typically, Cycling is a blunt force attack, simply used to smack enemies and knock them down, potentially ricocheting off of various surfaces. Using it as a cutting weapon isn't impossible, however; Mio's Cycling has specifically been shown to be able to slice through solid material at least once. The attack is often best used on smaller foes, like Mechazols or first-stage Bulgasaris, while larger foes are better dealt with using clones.

Though not exactly a common scenario, if the energy wheels are blocked from reaching each other when Cycling is initially activated, they will simply push whatever is in the way forward.

Gio version
Gio's Cycling appears to be the "standard" version. The attack combines two energy wheels into one, larger one, which is launched in a vertical fashion.

When pedaling at high speeds, this attack becomes "Cycling Maximum", increasing the size and power of the attack. 

Reo version
Reo's Cycling creates five energy wheels that don't combine but are launched all at once side-by-side, giving it a very wide range.

Alternatively, the Action Bike can produce a "Cycling Array", in which the five energy wheels are shot out individually instead. 

Mio version
Mio's Cycling is similar to Gio's, but the combined wheel is launched in a horizontal fashion. The initial energy wheels are vertical when first generated, however, so they will stay that way if they are unable to reach each other. 

Pio version
Pio has two different Cycling variations. When he had his training wheels on, Cycling would release four different energy wheels - two from the main wheels, two from the training ones - that would home in on their targets as seen on Pio's visor.

Once these training wheels were removed, Pio's Cycling became notably different, combining two energy wheels into a butterfly-like drone. The butterfly is very slow, likely the slowest-moving of any Cycling, but it is also the most powerful, immediately blowing up upon contact with its target. 

Teo version
Teo's Cycling is somewhat of a combination of Gio's and Mio's, with the combined energy wheel flipping like a coin on its way forward, meaning it's position can be vertical, horizontal, and everything in between. 

Mrs. Lee version
Mrs. Soonhee Lee does not have an Action Bike, but possesses a ring that can produce a Cycling attack. Flicking the ring launches a single energy wheel that is smaller than the typical Cycling wheels but is just as effective.

Mrs. Lee can also hit an active Cycling wheel with another one for a "one-cushion" shot, sending both in an intended direction. Gio was impressed by this and eventually learned to do it himself, too. 