Hoverbike

The hoverbike offers a fast way to travel across the map. There are two hoverbikes in the game, the Sandcutter and Simoon, though the Sandcutter is only used before leaving the Ewer. The hoverbike's parts can be customized at any Machinist, i.e. at Burnt Oak Station, Marrow Bones Station, Seven Sisters Station, the Mysterious Shrine, or in Eccria. Most bike parts can be bought from merchants.



Bike Parts
There are three kinds of bike parts; boosters, wings, and fronts. All bike parts come in sets consisting of these three kinds, and they are always found together. The speedster bike boasts the highest overall stats.

Whistling
Whistling is a way to call Simoon to Sable. On PC, it is done by pressing 'F'. The pathfinding deployed by Simoon is lacking at times and doesn't handle cliffs very well, so this is not a guaranteed way to summon her. A more reliable method is to fast-travel.

Sandcutter
While not intended, there is a way to get the sandcutter to outside the Ewer, namely by climbing over the Ewer walls, activating a fast-travel marker (e.g. the Cartographer in Sansee) and then fast-travelling there. The sandcutter cannot be whistled at, but it is customizable at a Machinist provided you have bike parts in your inventory. On the other hand, the sandcutter bike parts cannot be acquired in-game, although their items feature descriptions, implying that they were once supposed to be accessible.