The Railjack has four main components that determine its stats: Shield Arrays for shield capacity and regeneration rate/delay; Engines for top speed, acceleration, and turning rate; Plating for hull (health) and armor, and Reactors for Ability Strength, Ability Range, and Ability Duration for Battle Mods. Sigma versions of armaments can be researched and purchased in the Clan Dojo Dry Dock research console, then installed in the Railjack console. These have no build time once all the resources needed to build them are contributed. House versions can be found as Wreckage in missions, with each House favoring certain attributes over others. Wreckage Components need to be repaired either with resources taking 12 hours to complete (this can be rushed for 20 Platinum), or instantly without using any resources by expending a single-use Rush Repair Drone. The Wreckage Components stats vary randomly. With the exception of the Sigma variants and all the Platings, all MK III Components have an additional special unique trait in addition to the base stat increases, and each component from each house comes with 2 different variants of the trait (except Vidar Shield Array that has an extra variant for a total of 3 different unique traits). Players start with 8 Component and Armament slots for repaired wreckage, with two additional slots being purchasable for 12 Platinum. Players can hold up to an indefinite amount of recovered wreckage which can be inspected to reveal their stats and traits. There are only 30 inspected wreckage slots, which cannot be increased in any way, and players with capped inspected wreckage cannot continue inspecting wreckage or embark on Empyrean missions until they have cleaned their inventory of inspected wreckage. All wreckage cannot be traded between players. Shield Array[] Main article: Shield Array Shield Arrays are Components that modify a Railjack's defensive Shields. Stats are randomized within a range determined by the item's House and Tier. Shield Array stats vary between Houses, but the differences follow the same pattern: Lavan Shield Arrays had the best in class capacity, at the cost of recharge performance. Vidar focused their Shield Array research on reliability rather than all out performance. Zetki Shield Arrays had unbeatable recharge delay at the expense of maximum shield capacity. Sigma Lavan Vidar Zetki Item Stats Shield Capacity 1,500 1,400 - 2,000 1,200 - 1,750 1,050 - 1,500 Shield Recharge Delay Reduction 1.00s 0.10s - 1.00s 0.50s - 2.00s 1.00s - 4.00s Shield Recharge per second 7.00% 15% - 30% 15% - 30% 10% - 12% Sigma Lavan Vidar Zetki Shield Capacity 1,350 1,200 - 1,700 1,100 - 1,500 1,050 - 1,350 Shield Recharge Delay Reduction 0.50s 0.10s - 0.50s 0.50s - 1.00s 0.50s - 2.00s Shield Recharge per second 5.00% 5.00% 5.00% 5.00% Sigma Lavan Vidar Zetki Shield Capacity 1,200 1,100 - 1,400 1,100 - 1,300 1,050 - 1,200 Shield Recharge Delay Reduction 0.0 0.0 0.0 0.0 Shield Recharge per second 5.00% 5.00% 5.00% 5.00% Sigma Shield Capacity 1,000 Shield Recharge Delay Reduction 0.0 Shield Recharge per second 5.00% View MK III Shield Unique Traits List▾▾ House Component Trait Lavan Shield Array +1000% of Energy consumed using Battle Mods is converted to Shields Lavan Shield Array Shields replenish 50x faster while cloaked Vidar Shield Array 30% of Shield Damage is diverted to increase Turret Damage by up to 300 for the next shot fired Vidar Shield Array Every 10s, shields apply an Electrical proc to all enemies within 50m Vidar Shield Array Redirect 50 Energy to Shields with every kill Zetki Shield Array +25% Railjack damage while shield depleted Zetki Shield Array +10% Tenno shields on Railjack Engines[] Main article: Engines Engines are Components that modify a Railjack's cruising speed and boost capabilities. Stats are randomized within a range determined by the item's House and Tier. A Railjack's base Engines stats are: Engine Speed: 150 meters per second Engine Boost: 1.3x Avionics are applied to these base stats, and then the equipped Engine's values are added on. Total speed can be calculated using the following formula: Total Base Speed = [150 × (1 + Bonus % from  Conic Nozzle)] + (Additional Engine Speed) Base Boost Multiplier is 1.25x, and the bonus from Engines is additive, but at least in the UI, the Boost Multiplier is rounded to the nearest .1. For example, an Engine with +0.17 Boost Speed Multiplier would show an Engine Boost value of 1.4x. Total Boost Multiplier = [1.25 × (1 + Bonus % from  Ion Burn)] + (Additional Boost Multiplier) Engines stats vary between Houses, but the differences follow the same pattern: Lavan Engines touted the best boost speeds, but struggled to compete at top speeds. Vidar Engines were the best in class for top speed, at the expense of Boost performance. Zetki Engines were solid performers in all categories but stood out in none. Sigma Lavan Vidar Zetki Item Stats Engine Speed 30 m/s 10 - 30 m/s 30 - 60 m/s 20 - 40 m/s Engine Boost 0.20x 0.30 - 0.60x 0.05 - 0.20x 0.10 - 0.30x Equipped Stats Engine Speed 180 m/s 160 - 180 m/s 180 - 210 m/s 170 - 190 m/s Engine Boost 1.45x 1.55 - 1.85x 1.30 - 1.45x 1.35 - 1.55x Speed While Boosting 270 m/s 256 - 342 m/s 234 - 315 m/s 238 - 304 m/s Sigma Lavan Vidar Zetki Item Stats Engine Speed 20 m/s 5 - 20 m/s 20 - 40 m/s 10 - 30 m/s Engine Boost 0.10x 0.20 - 0.40x 0.05 - 0.10x 0.10 - 0.20x Equipped Stats Engine Speed 170 m/s 155 - 170 m/s 170 - 190 m/s 160 - 180 m/s Engine Boost 1.35x 1.45 - 1.65x 1.30 - 1.35x 1.35 - 1.45x Speed While Boosting 238 m/s 233 - 289 m/s 221 - 266 m/s 224 - 270 m/s Sigma Lavan Vidar Zetki Item Stats Engine Speed 10 m/s 5 - 10 m/s 10 - 30 m/s 10 - 20 m/s Engine Boost 0 0 0 0 Equipped Stats Engine Speed 160 m/s 155 - 160 m/s 160 - 180 m/s 160 - 170 m/s Engine Boost 1.25x 1.25x 1.25x 1.25x Speed While Boosting 208 m/s 202 - 208 m/s 208 - 234 m/s 208 - 221 m/s Sigma Item Stats Engine Speed 0 m/s Engine Boost 0 Equipped Stats Engine Speed 150 m/s Engine Boost 1.25x Speed While Boosting 195 m/s (Without any speed mods (e.g.  Conic Nozzle) equipped, and assuming rounded boost multiplier.) View MK III Engines Unique Traits List▾▾ House Component Trait Lavan Engines +20% Top Speed while shields are depleted Lavan Engines Tenno gain 500 overshields after being launched from the Slingshot Vidar Engines +50% boost speed while shield depleted Vidar Engines -10% Intruders armor Zetki Engines Shields regenerate 50% faster when Railjack is stationary Zetki Engines +20% Tenno weapon damage onboard Railjack Plating[] Main article: Plating Plating are Components that modify a Railjack's Hull (Health) and Armor. Stats are randomized within a range determined by the item's House and Tier. Unlike other Railjack Components, the Plating does not have any unique traits. Plating stats vary between Houses, but the differences follow the same pattern: Lavan focused their efforts on superior Hull composition, at the cost of Armor integrity. They are also the only one with a distinct synergy with another component; one possible unique attribute of a Lavan Reactor is a +25% boost to Shield capacity if equipped alongside a Lavan Plating. Vidar designed their plating to have the highest possible Armor strength, Hull reinforcement was less of a priority. Plating from House Zetki struck a balance between Armor strength and Hull fitness. The above implies that best potential effective health (for Mk II-III) can only be obtained from Lavan plating, Vidar being mediocre, and Zetki being the worst choice. Sigma Lavan Vidar Zetki Hull (Health) 2450 4500 - 6000 3300 - 4400 3600 - 4800 Armor 1625 2150 - 2688 2950 - 3688 2350 - 2938 Effective Health 15721 36750 - 59760 35750 - 58491 31800 - 51808 Sigma Lavan Vidar Zetki Hull (Health) 1750 3350 - 5025 2550 - 3825 2750 - 4125 Armor 1300 1775 - 2367 2375 - 3167 1925 - 2567 Effective Health 9333 23171 - 44672 22737 - 44204 20396 - 39421 Sigma Lavan Vidar Zetki Hull (Health) 1350 2200 - 4400 1800 - 3600 1900 - 3800 Armor 975 1400 - 2100 1800 - 2700 1500 - 2250 Effective Health 5737 12467 - 35200 12600 - 36000 11400 - 32300 Sigma Hull (Health) 1050 Armor 650 Effective Health 3325 Reactor[] Main article: Reactor Reactors are Components that modifies a Railjack's Battle mods Strength, Range, and Duration. They are randomized within a range determined by the item's House and Tier. Reactor stats vary between Houses, but the differences follow the same pattern: Lavan Reactors prized Railjack ability Duration above all else. Vidar Reactors were optimized to increase the Railjack's ability Range. The design priority for Zetki's Reactors was greater Railjack ability Strength. Mk II Reactors have the highest main stat bonus. Mk III Reactors have a secondary stat with Lavan increasing Strength, Vidar increasing Duration, and Zetki increasing Range, but at some expense to the main stat. The secondary stat can only be maxed with Valence Fusion using other Mk III of the same type. Sigma Lavan Vidar Zetki Duration 15% 40-60% 20-40% 0% Range 15% 0% 40-60% 20-40% Strength 15% 20-40% 0% 40-60% Sigma Lavan Vidar Zetki Duration 0% 50-80% 0% 0% Range 0% 0% 50-80% 0% Strength 25% 0% 0% 50-80% Sigma Lavan Vidar Zetki Duration 20% 20-40% 0% 0% Range 0% 0% 20-40% 0% Strength 0% 0% 0% 20-40% Sigma Duration 0% Range 0% Strength 0% View MK III Reactor Unique Traits List▾▾ House Component Trait Lavan Reactor Equipping Lavan Hull Plating increases max Shields by 25%. Lavan Reactor Tenno gain 50% Damage increase for 5s after being launched from the Slingshot Vidar Reactor +100% damage immunity duration after a Major Breach is repaired Vidar Reactor Tenno gain 50% Speed Boost for 5s when deploying their Archwing Zetki Reactor 50% chance that an Electric Hazard will repair automatically after 5s Zetki Reactor 50% chance that a Fire Hazard will repair automatically after 5s Zetki Reactor 50% chance that an Ice Hazard will repair automatically after 5s Drop Sources[] All components of the same Tier and House share the same drop source and chance. Valence Fusion[] Valence Fusion combines two of the same Railjack Components and Armaments (in respect to the House and Type) into one with superior bonus stats. This applies to Turrets, Shield Arrays, Engines, Platings, and Reactors, but does not apply to Ordnance or other Sigma Items. This can be managed in the Dry Dock. Stat increases are capped between 40% and 60% for weapons and miscellaneous values for components. To perform Valence Fusion, players must click on the component or armament desired to be upgraded, and then the part to be used as the donor. Only the object to be upgraded must be constructed, while the donor item can either be repaired or unrepaired. If the component has a different MKIII unique trait, the player is prompted to select one. If the player does not have enough resources, a failure message will notify the player which resources they are missing. If the item to be upgraded is already maximized, a failure message will notify the player that the item can no longer be enhanced further. Once the components/armaments with stats below maximum have been selected and the player has enough resources, a confirmation screen displays the desired component's new bonus values and warns that the transfer will consume the selected donor component along with the required resources. Players are then prompted to type FUSE to confirm the fusion. Costs[] Fusing with repaired parts will require some Endo: MK I: 800 Endo MK II: 1600 Endo MK III: 2400 Endo Fusing with unrepaired parts instead of Endo costs 40% of the resources and Credits Credits that would be used to repair it (Any decimals are rounded up to the nearest whole number. Ex: 3.2 = 4). Upgrading[] Upgrades count towards the stat bonus on MKIII turrets and the random stats on other Railjack gear. Fusing gear that is the same tier level (e.g. MKIII with MKIII) will yield an increase of stats by 10%. Example: Fusing together Vidar Photor MKIII with +40% bonus damage with another Vidar Photor MK III with +35% bonus damage, results in one Vidar Photor MKIII with +44% bonus damage. Fusing gear that has a lower tier level (e.g. MKII with MKIII or MKII with MKI) will yield an increase of stats by 5%. Fusing gear that has a lower tier level by two (i.e. MKI with MKIII) will yield an increase of stats by 2%. Fusing gear that has a higher tier level (e.g. MKIII with MKII) is equivalent to the same fusion the other way around (Results in MKIII Gear). For Weapons and same-tier Armaments, maximum % bonus (60%) can be achieved in the following number of fusions: Minimum Initial Value Maximum Number of Fusions 58.0% 0 (automatically rounded up to 60.0%) 52.8% 1 48.0% 2 43.6% 3 39.7% 4 36.1% 5 32.8% 6 29.8% 7 27.1% 8 25.0% 9 For example, a  Tenet Envoy with a 42% Toxin bonus will need at most 4 Fusions to reach the maximum element bonus of 60%. Manufacturing Requirements[] Manufacturing and repair costs are the same for all Shield Arrays, Engines, and Reactors of the same House and tier. Mk I Shield Arrays, Engines and Reactors Mk II Shield Arrays, Engines and Reactors Mk III Shield Arrays, Engines and Reactors Mk I Shield Arrays, Engines and Reactors Mk II Shield Arrays, Engines and Reactors Mk III Shield Arrays, Engines and Reactors Mk I Shield Arrays, Engines and Reactors Mk II Shield Arrays, Engines and Reactors Mk III Shield Arrays, Engines and Reactors Mk I Shield Arrays, Engines and Reactors Mk II Shield Arrays, Engines and Reactors Mk III Shield Arrays, Engines and Reactors