Y-Wing is the common name of the Koensayr BTL Longprobe Starfighter. Originally designed for long range reconnaissance, this J-type snub fighter has twin-propulsion systems behind a single cockpit. The BTL-A4 is a 16-meter-long, one-man fighter with space for an astromech droid. The BTL-S3 is a two-man fighter, also equipped with an astromech droid. They can make 80 MGLT at sublight speeds, and can maneuver at 1,000 kilometers per hour in an atmosphere. It boasts the following shipboard systems: Gax Revival Life Support System, R2 Astromech Unit for Navigation, 2 ArMek SW4 Laser Cannons mounted on top, Titanium Reinforced Alusteel Alloy Hull (rated at 40 RU), Thiodyne O-3R Ionization Reactor, Koensayr R300-H Hyperdrive Motivation Unit, Long Range Phased Tachyon Detection Array Model Number PA-9r, Short Range Primary Threat Analysis Grid Number PG-7u, 2 Disk Ventrals for maneuvering, Cryogenic Power Cells, Subpro NH-7 Avionics Control Package, Fabritech ANs-5d Sensor Unit, SI 5G7 Quickscan Vector Imaging Crosshairs, 2 Koensayr R200 Ion Fission Engines, 2 Taim and Bak KX5 Laser Cannons mounted on nose (early versions and many BTL-S3's used IX4 cannons), Novaldex Power Generator, Chempat Shield Projector (rated at 75 SBD), 2 Exhaust Nacelles, Fabritech ANc-2.7 Tracking Computer, Arakyd Flex Tube Proton Torpedo Launchers (2 racks of 4 each).

The Y-Wing was the basic Rebel fighter before the production of the X-Wing. Very slow, they are rather easy targets for Imperial TIEs, but the Y-Wing can hold a deadly load of torpedoes.