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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 )] + (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 )] + (Additional Boost Multiplier)

## Houses & Tiers

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

## Unique Traits

Recovered Mk III Engine Wreckages will have an additional effect, chosen at random from the abilities available to their House:

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

## Acquisition

Sigma Engines Mk III are researched in the Clan Dojo's Dry Dock.

Manufacturing Requirements

10,000

75

1,500

750

Time: 0 hrs
Rush: N/A
Market Price: N/A  Blueprints Price: N/A
Railjack Lab Research
N/A

Time: 3 hrs
Prereq: Mk II
x1   x3   x10   x30   x100

Lavan Engines Mk III can be rewarded when completing missions in Pluto Proxima or Veil Proxima, and can be dropped as wreckage by Vorac Gox and Orm Gox.

Manufacturing Requirements

15,000

5

75

1,500

750
Time: 3 hrs
Rush: 20
Market Price: N/A  Blueprints Price: N/A

Vidar Engines Mk III can be rewarded when completing missions in Pluto Proxima or Veil Proxima, and can be dropped as wreckage by Vorac Gox and Orm Gox.

Manufacturing Requirements

15,000

5

75

1,500

750
Time: 3 hrs
Rush: 20
Market Price: N/A  Blueprints Price: N/A

Zetki Engines Mk III can be rewarded when completing missions in Veil Proxima, and can be dropped as wreckage by Elite Exo Outriders and Vorac Weavers.

Manufacturing Requirements

15,000

5

75

1,500

750
Time: 3 hrs
Rush: 20
Market Price: N/A  Blueprints Price: N/A

Sigma Engines Mk II are researched in the Clan Dojo's Dry Dock.

Manufacturing Requirements

10,000

50

1,000

500

Time: 0 hrs
Rush: N/A
Market Price: N/A  Blueprints Price: N/A
Railjack Lab Research

?

1

750

1,500

450
Time: 3 hrs
Prereq: Mk I
x1   x3   x10   x30   x100

Lavan Engines Mk II can be rewarded when completing missions in Saturn Proxima or Neptune Proxima, and can be dropped as wreckage by Axio Gox.

Manufacturing Requirements

15,000

4

50

1,000

500
Time: 3 hrs
Rush: 20
Market Price: N/A  Blueprints Price: N/A

Vidar Engines Mk II can be rewarded when completing missions in Saturn Proxima or Neptune Proxima, and can be dropped as wreckage by Axio Gox.

Manufacturing Requirements

15,000

4

50

1,000

500
Time: 3 hrs
Rush: 20
Market Price: N/A  Blueprints Price: N/A

Zetki Engines Mk II can be dropped as wreckage by Elite Gyre Outriders and Axio Weavers.

Manufacturing Requirements

15,000

4

50

1,000

500
Time: 3 hrs
Rush: 20
Market Price: N/A  Blueprints Price: N/A

Sigma Engines Mk I are researched in the Clan Dojo's Dry Dock.

Manufacturing Requirements

10,000

25

500

250

Time: 0 hrs
Rush: N/A
Market Price: N/A  Blueprints Price: N/A
Railjack Lab Research

?

1

500

1,000

300
Time: 3 hrs
Prereq: N/A
x1   x3   x10   x30   x100

Lavan Engines Mk I can be rewarded when completing missions in Earth Proxima or Venus Proxima.

Manufacturing Requirements

15,000

3

25

500

250
Time: 3 hrs
Rush: 20
Market Price: N/A  Blueprints Price: N/A

Vidar Engines Mk I can be rewarded when completing missions in Earth Proxima or Venus Proxima.

Manufacturing Requirements

15,000

3

25

500

250
Time: 3 hrs
Rush: 20
Market Price: N/A  Blueprints Price: N/A

Zetki Engines Mk I can be dropped as wreckage by Elite Kosma Outriders and Taro Weavers.

Manufacturing Requirements

15,000

3

25

500

250
Time: 3 hrs
Rush: 20
Market Price: N/A  Blueprints Price: N/A

The base Engines are included in the Railjack's initial loadout after it has been repaired in the Rising Tide quest. It cannot be scrapped, and additional copies cannot be built.

## Valence Fusion

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