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The RXF-91A Silhouette Gundam Kai is a mobile suit that appears in the manga/model kit series Mobile Suit Gundam Silhouette Formula 91 in UC 0123.

Technology & Combat Characteristics

After Tokio Randall and his RXF-91 Silhouette Gundam broke through the Crossbone Vanguard's siege in the Zebra Zone, the Silhouette Gundam's wreckage was returned to Anaheim Electronics and subsequently refurbished as the RXF-91A Silhouette Gundam Kai. It featured reinforced armor throughout the chest, cockpit hatch, and near the intakes. Additionally, it has improved main generator output and is retrofitted with a new model VSBR.


  • Vulcan Gun
The Silhouette Gundam Kai mounts two vulcan guns on its forehead. These shell firing weapons have a high-rate of fire but have little power and can't damage the thick armor of a mobile suit, though it can damage lightly armored areas such as the sensors. The weapons are ideal for shooting down small, fast moving, lightly armored targets such as missiles, small land vehicles, and attack helicopters.
  • Mega Machine Cannon
The Silhouette Gundam Kai is equipped with a pair of fire-linked mega machine cannons, both of which are improved with modern technology over the old designs, on its torso. In the age of miniaturized mobile suits, speed is emphasized over protection, thus armor is sacrificed to reduce mass and weight. This leaves many MS vulnerable to physical round weapons, such as machine guns, that had been discarded for mobile suit combat because of a lack of effectiveness after the One Year War.
  • Heavy Machine Gun
The heavy machine guns are mounted on the Silhouette Gundam Kai's forearms to act as back-up weapons. While not near as powerful as a beam rifle, the sheer number of bullets flying through the air shred through almost anything, regardless of how durable it is.
  • Beam Saber
The standard close-combat melee weapon of most MS, beam sabers are powerful weapons that emit a blade of plasma contained by an I-field that can cut through any physical armor. The only way to fully defend against a beam saber is to block it with another beam saber or a beam shield. Because of the I-field a beam saber can be used to block an attack from a beam rifle, but this is a technique that requires considerable skill, and can only block an attack of so much power. The Silhouette Gundam Kai is equipped with two beam sabers stored in a recharge rack on the backpack.
  • VSBR
The most powerful weapon of the Silhouette Gundam Kai Type is a pair of Variable Speed Beam Rifle (abbr. VSBR) on its backpack. Rather than being a hand-carried weapon powered by an energy cap or e-pac, the VSBR is mounted on the mobile suit itself and powered directly by its reactor.
The pilot could adjust the speed at which the mega particles used in the beam fire were accelerated. Slower-speed particles produced a wider beam that delivered more raw damage, and higher-speed particles create a more tightly focused, penetrating beam. Thus, the Gundam's pilot could choose to deliver beam damage on a wider area or focused, high-speed shots to penetrate thick armor or even beam shields.
  • Beam Shield
Mounted on the left forearm of the Silhouette Gundam Kai is a beam shield generator. Unlike an I-field generator, which is effective only against beam attacks, the beam shield can block both beam and projectile weapons.
  • Beam Rifle
The beam rifle is the standard ranged weapon of Earth Federation mobile suits. The technology of the beam rifle allows it to fire a compressed mega particle beam which can penetrate any physical armor, leading to the saying that any mobile suit equipped with a beam rifle had the power of a battleship at its disposal. The Silhouette Gundam Kai's beam rifle is powered by a rechargeable E-cap and can mount on the waist weapons mount.
  • Grenade Launcher
The beam rifle is fitted with an underslung single-shot grenade launcher, which can be loaded with a variety of grenades. The grenade fired is not very effective against large ships, but is an ideal mid-range anti-mobile suit weapons.




  • The "A" in the "RXF-91A" designation stands for "ADVANCED".
  • "Kai" is the Japanese Kanji character "改", in English meaning "modified".

External links

Silhouette Formula 91 Mechanics
Anaheim Electronics
Mobile Weapon
Mobile Suit
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F90III-Y Cluster Gundam | F90Y改 Cluster Gundam Kai Prototype