A hyperdrive ring (also known as a hyperdrive booster ring or hyperspace transport ring) was a mode of faster-than-light travel for spaceships with no onboard hyperdrive.
During the millennia of the Galactic Republic, many starfighters were too small to safely contain a hyperdrive, so in order to travel through hyperspace these ships were required to connect to a Hyperdrive Ring. These rings were usually powered by twin reactors and ion drives; the ring contained hypermatter, providing ballast for the attached starfighter during the jump to hyperspace. Variant models could be equipped with additional acceleration pods, increasing both their sublight and supralight speed. In all cases, once a hyperspace jump was complete, the starfighter disengaged from the booster ring, which remained anchored in space, awaiting the ship's return.
This was seen as a vulnerability by some, for if the booster ring was destroyed, the starfighter would be stranded. Starfighters used by the Jedi Order were equipped with adaptable long-range communication relays, which allowed the pilot to contact the Jedi Temple for assistance in these instances. Some Jedi, like Anakin Skywalker, modified their ships to contain ultra miniaturized-hyperdrives, eliminating the vulnerability, at a cost to the hyperdrive's performance and range.
The Delta-7 Aethersprite-class light interceptor, Delta-7B Aethersprite-class light interceptor, and the Eta-2 Actis-class light interceptor were three of the most visible users of the Hyperdrive Ring Technology. Limulus-class transports also used them, and the Koros Spaceworks interceptors had rings modified for their benefit.
During the Clone Wars, the two most popular variations of Hyperdrive Rings were the Syluire-31 hyperspace docking ring and the Syluire-45 hyperspace transport ring. Both were manufactured by TransGalMeg Industries, thanks in part to a lucrative subcontract they received from Kuat Drive Yards, builders of the starfighters of the Jedi Order.
- LEGO Star Wars: The Video Game (Non-canonical appearance)
- LEGO Star Wars: The Complete Saga (Non-canonical appearance)
- Outbound Flight
- Star Wars Episode II: Attack of the Clones (First appearance)
- Star Wars: Republic 50: The Defense of Kamino
- Storm Fleet Warnings
- Star Wars: Republic 61: Dead Ends
- Star Wars: Republic 62: No Man's Land
- The Cestus Deception
- Star Wars: The Clone Wars: Shipyards of Doom
- Star Wars: The Clone Wars – "Shadow of Malevolence"
- Star Wars: The Clone Wars – "Downfall of a Droid"
- Star Wars: The Clone Wars – "Lair of Grievous"
- Star Wars: The Clone Wars – "Children of the Force"
- Star Wars: The Clone Wars – "The Mandalore Plot"
- Star Wars: The Clone Wars – "Death Trap"
- Star Wars: The Clone Wars – "R2 Come Home"
- Star Wars: The Clone Wars – "Tipping Points"
- The Clone Wars: Bait (Destroyed)
- Star Wars: The Clone Wars: Lightsaber Duels (Appears in flashback(s))
- Labyrinth of Evil
- Star Wars Episode III: Revenge of the Sith
- Dark Lord: The Rise of Darth Vader
- The Last of the Jedi: A Tangled Web
- Star Wars: Rogue Squadron III: Rebel Strike
- Survivor's Quest
- Star Wars: Attack of the Clones: The Illustrated Companion
- Star Wars: Rogue Squadron III: Rebel Strike: The Official Nintendo Player's Guide
- Revenge of the Sith: Incredible Cross-Sections
- Star Wars: The Clone Wars: The Visual Guide
- Starships of the Galaxy (Saga Edition)
- The Complete Star Wars Encyclopedia
- Star Wars: The Clone Wars Comic UK 6.24