Modifications

Modules and Modifications are upgrades that can be unlocked and purchased either by earning research points with a vehicle and then purchasing it with silver lions , or by paying golden eagles to research and purchase the modification instantly. All of the modifications vary on the increase (or decrease) of the statistical and literal performance.

Air Forces

There are three different categories of modifications for aircraft: Flight performance, Survivability and Weaponry.

Planes

Flight Performance

These modifications improve the flight characteristics of the aircraft, with varying degrees of success. They will generally increase maximum speed and rate of climb, as well as decreasing the turn time of the aircraft.

• Fuselage repair: Decreases the drag coefficient.
• Radiator: Improves the cooling system in the engine.
• Compressor: Increases overall engine performance by increasing its horsepower.
• Wings repair: Reduces drag, and increases lift efficiency coefficient.
• Engine: Adds horsepower.
• Engine injection: Increases efficiency of the engine throttle.
• G-Suit: Allows the crew to experience greater G-force overload before "blacking out".
• New boosters: Increases flight control assistance, allowing full input at higher speeds, resulting in less locking-up of the ailerons, elevators, and/or rudders. This modification is found mainly on jet aircraft and the F-82E.
• X octane fuel: Allows engine to run at higher settings to get more power.

Survivability

These modifications strengthen the aircraft, allowing the aircraft to potentially survive for longer. They may also improve the flight characteristics of the aircraft, through weight and drag reduction.

• Airframe: Adds 10% construction strength, reduces weight.
• Cover: Adds 5% construction strength, reduces weight.
• Protective vest: Partially protects crew members from shells and flak fragmentation, typically found on US bombers.
• Rear armor plate: added armor to protect the pilot, typically found on USSR aircraft.
• Armored glass: added armored windscreen (bulletproof glass) to protect pilot, typically found on USSR aircraft.

Weaponry

These modifications allow to customize your weaponry of your aircraft. This also includes unlocking of new suspended ordnance or different configurations of the aircraft's offensive armament.

• Offensive X mm: Allows you to choose between ammo belts for that particular gun calibre.
• New X mm MGs/cannons: Replaces the old MG/cannon with new parts, or a whole new gun. This decreases the bullet spread and failure rate (chance of overheating/jamming) of the gun.
• Turret X mm: Allows you to choose which ammo belt defensive turrets use, but only turrets of that gun calibre.
• New X mm MGs/cannons (turret): Similar to "New X mm MGs/cannons", but only applies to turret-mounted armament.
• Cannons/machine guns/gunpods: Allows you to install different or additional cannons, either on the airframe or externally (gunpods).
• Bombs/missiles/rockets/torpedoes: Allows you to install different or additional suspended armament.
• Flares/Chaff: Allows you to equip countermeasures.
• RWR: Allows you to install a radar warning receiver.

Helicopters

Helicopters share a lot of the same modifications as aircraft, but there are some unique examples.

Flight Performance

• Replacing helicopter blades: Improves the efficiency and capabilities of the helicopter blades, increasing max speed.

Survivability

• Flak jacket: Similar to the "Protective vest" aircraft modification.
• Helicopter frame: Similar to the "Airframe" modification.

Weaponry

• IRCM: Allows you to equip countermeasures.
• HIRSS: Allows you to reduce the engines' IR signature.

Ground Forces

Modifications for ground vehicles are split into three categories: Mobility, Protection, and Firepower. Depending on the total number of modules of the selected vehicle, some modifications can be found in a different category.

Mobility

Modifications that improve your tank's ability to manoeuvre around the terrain, but also increase the performance of the suspension and tracks.

• Tracks: Increases track durability and traction.
• Suspension: Increases suspension tolerance to rough ground, increasing mobility.
• Brake System: Allows faster braking speed and force.
• Filters: Increases engine horsepower and acceleration.
• Transmission: Increases horsepower to the drive wheels, increasing acceleration.
• Engine: Increases engine horsepower and acceleration.

Protection

Modifications increasing the survivability of the tank. These are the most important modifications to upgrade.

• Parts: Allows tank to undergo repairs in the field. Important if you need to fix a module that has crippled your tank such as the transmission or engine.
• FPE: Fire Protection Equipment, allows the tanks to extinguish fuel fire. This will make sure your tank does not gradually die from a simple fire.
• Dozer Blade: Equips the vehicle with a bulldozer blade to dig defensive positions
• Smoke grenade: When fired, creates a smoke screen around the grenade's point of landing.
• Crew Replenishment: Allows you to replenish your crew while in combat.
• Add-on Armor: Attaches improvised armour onto the vehicle to increase armour thickness. Increases survivability.
• ESS: Engine Smoke-generating System, when activated will continuously generate a smoke screen originating from the engine for a period of time.
• NVD: Allows use of night vision devices and thermal optics (this module is sometimes located in the Firepower section).

Firepower

Modifications improving various aspects of the tank's weaponry systems.

• Horizontal Drive: Increases turret traverse speed.
• Adjustment of Fire: Increases gun accuracy by decreasing horizontal and vertical spread.
• Elevation Mechanism: Increases turret vertical traverse speed and decreases vertical spread in gun accuracy.
• Artillery Support*: Calls for artillery for in-direct fire on a position. *Not available for heavy tanks or tank destroyers.
• Ammunition: Unlocks different ammo for usage in the tank's armaments.
• Airstrike: Allows you to join an air battle activated by an ally on a bomber or attacker in Arcade, or reduces the cost in spawn points to spawn an aircraft for each scouted enemy that is destroyed by an ally in Realistic battles. This modification is only available on certain light tanks with the "scouting" ability.
• Improved optics: Increases the detection radius of enemy vehicles by +30% of the crew's visual range.
• Laser rangefinder: Improves accuracy and speed of the gunner's rangefinding abilities.

Naval Forces

Modifications for naval vessels are split into the Seakeeping, Unsinkability, and Firepower categories.

Seakeeping

These modifications improve the mobility and manoeuvrability of the ship.

• Dry-Docking: Cleans the hull of the ship, reducing drag.
• Rudder Replacement: Improves the rudder and steering mechanisms, decreasing turn time and radius.
• Propeller Replacement: Improves the propellers, increasing max speed and acceleration.
• Engine Maintenance: Improves the engines and related systems, increasing max forward and reverse speed, as well as acceleration.

Unsinkability

These modifications increase the survivability of the ship, as well as providing other protective mechanisms.

• Tool Set: Allows repair of the ship while at sea.
• Fire Protection System: Allows fires to be put out without having to submerge the ship.
• Smokescreen: Generates a smoke screen behind ship continuously for a period of time.
• Shrapnel Protection: Reduces the effect of shrapnel inside the ship.
• Ventilation: Reduces crew casualties from smoke in the case of a fire.
• New Pumps: Increases the speed at which water is pumped out of the ship after the breech is repaired.
• Ammo Wetting: Reduces chance of ammo detonation due to fires.

Firepower

These modifications focus on improving the weaponry of the ship, including the available ammo belts and shells to be used, as well as new equipment such as bomb mortars and depth charges.

• Ammunition: Unlocks different rounds for weapons.
• Primary/Auxiliary/Anti-air Armament Targeting: Increase the turret rotation and pitch speed of the respective armament groups.
• Artillery Support: Calls for bombardment from a Battleship's main calibre guns on a certain position.
• Torpedo Mode: Increases the range of a torpedo in exchange for reducing its speed (or vice versa).
• Improved Rangefinder: Increases the accuracy and speed of rangefinding.