Perhaps the most popular transition in tricking, and arguably one of the defining features that sets tricking apart from other acrobatic genres, is the Swingthrough transition. Swingthroughs are simply transitions where one leg lands, and the in-air leg travels in a more or less straight, uninterrupted path into a takeoff from the same stance. In short, swingthroughs are one way to link landings from a landing position to tricks that takeoff from the same position. The most common example of this is the cork and gainer axis, which uses the complete landing position for both takeoff and landing, to chain consecutive repetitions.
The swingthrough transition is widely understood among many as only a backswing, the common back to front leg swing used to enter gainers and corks. Often times, the frontswing, where the leg travels from front to back, is seen as a separate transition, a carrythrough, but it should be noted that this is still often a swingthrough by definition, such as when landing in a semi position, and should be described as such. Read more about carrythroughs for further disambiguation. Similarly, the ‘master’ swing, utilized in master and grandmaster tricks is actually a swingthrough, when utilized from a hyper landing, although it is often mistakenly labeled as a missleg. The final common swingthrough is an inside swing, where the leg swings outward from the body, such as for an aerial or btwist from a mega stance, and is often referred as simply a frontswing. This swingthrough is often difficult to see as clearly, but it should be understood that when performed efficiently, it functions as a swingthrough, and is not a rapid or missleg. Simply watch the uninterrupted swinging path the in-air leg takes, and the conservation of linear momentum to identify a swingthrough. Regardless of direction, if the leg swings in a straight line without interruption before takeoff, and the general direction of momentum is maintained, it is a swingthrough.
The swingthrough is often associated with inverted tricks and their landing positions, and is covered more thoroughly in the Invert Landings sections.