Fallout 4 armor mods

In Fallout 4, armor can be modified using junk components. Anyone can create new base-level modifications, remove any existing modifications from armor and apply any player character-owned modifications to armor. The Armorer perk is required for creating new modifications of level 1 and above.

Power armor
One can add and remove mods from the power armor frame at a power armor station. Modding the armor can increase its Damage Resistance, change paint materials, improve core efficiency or add bonus stats and effects.

Helmet
Rad scrubbers Sensor array VATS matrix overlay Internal database Recon sensors Targeting HUD Headlamp
 * Removes radiation from consumed food and water.
 * Requires Science! 2
 * Increases Perception.
 * Requires Science! 3
 * Increases VATS hit chance.
 * Requires Science! 2
 * Increases Intelligence.
 * Requires Science! 2
 * Sighted aiming marks enemies with a compass pip.
 * Requires Science! 2
 * Visor highlights living targets.
 * Requires Science! 3
 * Standard:
 * Adds a standard headlamp.
 * Blue:
 * Adds a blue headlamp.
 * Requires Science! 1
 * Bright:
 * Adds a bright - almost blinding - headlamp.
 * Requires Science! 1
 * Purple:
 * Adds a purple headlamp.
 * Requires Science! 1
 * Red tactical:
 * Adds a red tactical headlamp.
 * Requires Science! 1
 * Vault Boy:
 * Adds a Vault Boy headlamp that shines an outline of the Vault Boy.
 * Requires Science! 1

Torso
Core assembly Blood cleanser Emergency protocols Motion-assist servos Kinetic dynamo Medic pump Reactive plates Stealth Boy Tesla coils Jet pack
 * Increases Action Point refresh speed.
 * Requires Science! 3
 * Reduces chance for addiction from drugs.
 * Requires Science! 1
 * Below 20% health, speed increases 25% and incoming damage is reduced 50%.
 * Requires Science! 4
 * Increases Strength.
 * Requires Science! 3
 * Taking damage recharges Action Points.
 * Requires Science! 4
 * Detects hits during combat and automatically uses a stimpak when health is low.
 * Requires Science! 4
 * Reflects 50% of melee damage back on attacker.
 * Requires Armorer 4
 * Activates stealth field while crouched.
 * Requires Science! 4
 * Deals Energy damage to nearby enemies.
 * Requires Science! 3
 * Enables jet-assisted boost while jumping.
 * Requires Science! 4, Armorer 4

Arms
Rusty knuckles Hydraulic bracers Optimized bracers Tesla bracers
 * Unarmed attacks cause bleeding damage.
 * Requires Blacksmith 2
 * Increased Unarmed Damage.
 * Requires Blacksmith 3
 * Reduces Action Point cost for power attacks.
 * Requires Blacksmith 1
 * Adds Energy damage to Unarmed attacks.
 * Requires Blacksmith 3, Science! 1

Legs
Calibrated shocks Optimized servos Overdrive servos Kinetic servos Explosive vent
 * Increases Carry Weight capacity.
 * Requires Science! 2
 * Reduces Action Point cost for sprinting.
 * Requires Science! 3
 * Increases sprint speed at additional Action Point cost.
 * Requires Science! 3
 * Increases Action Point refresh speed while moving.
 * Requires Science! 2
 * Increases damage radius for impact landing.
 * Requires Science! 3

Shielding & paint
Note: Not all paint jobs are available on all parts.

Each part of the power armor can be painted or shielded separately. Paint jobs, however, only have an effect when the entire armor is painted in the same scheme, while shield coatings are effective per separate armor part and don't require a full set. As a general rule: paint, besides modifying the statistics of power armor, also adds a cosmetic effect to the power armor. While shield coatings, on the other hand, leave the appearance of an armor unchanged (winterized coating is a paint job in all respects despite the name and requires all pieces to possess the paint/coating to work).

Certain paint schemes and shields are limited to specific power armor models, while others are available for all power armors. Raider power armor cannot be painted or shielded at all. Painting does not require any materials with the exception of Vault-Tec paint and military paint.

Shielding/coating/plating
Titanium plating Lead plating Photovoltaic coating Winterized coating Prism shielding Explosive shielding X-01 EMP shielding Thermal coating
 * Increases armor health by 10%.
 * Requires Armorer 3
 * Requires: Adhesive 6, Aluminum 8, Steel 4
 * +100 Radiation Resistance.
 * Requires Armorer 1
 * Requires: Adhesive 5, Aluminum 4, Circuitry 2, Fiber optics 4, Lead 4
 * Increases action points refresh by 20% in the sunlight
 * Requires Science! 2
 * Requires: Adhesive 4, Aluminum 2, Crystal 4, Gold 2, Nuclear material 4
 * +20 Energy Resistance.
 * Requires: Adhesive 4, Aluminum 3, Rubber 6
 * +40 Energy Resistance.
 * Requires Science! 2
 * Requires: Adhesive 4, Aluminum 2, Nuclear material 4, Rubber 4
 * 2% less (for each piece) Damage from explosions.
 * Requires Science! 1
 * Requires: Adhesive 6, Aluminum 4, Ceramic 6
 * +30 Energy Resistance.
 * Requires: Adhesive 6, Aluminum 8, Rubber 8
 * +20 Energy Resistance.
 * Requires: Adhesive 8, Aluminum 8, Crystal 6

Paint schemes
For paints that require all pieces to be painted to grant a SPECIAL bonus, as long as all parts have the same stat boosted, they can be mixed without limit.

Atom Cat paint BOS knight paint (described in-game as "BOS II") BOS paladin paint (described in-game as "BOS V") BOS sentinel paint (described in-game as "BOS VI") BOS elder paint Minutemen paint Hot Rod Flames paint Hot Rod Hot Pink paint Hot Rod Shark paint Institute paint Military paint Vault-Tec paint Railroad paint Vim! paint job Vim! Refresh paint job Sugar Bombs paint job Abraxo paint job Nuka-Cola paint job
 * Decreases action point cost for sprinting and increases Charisma with all pieces painted
 * Requires: T-60 power armor
 * Can be bought from Rowdy at the Atom Cats garage
 * Increases Strength with all pieces painted.
 * Requires: None
 * Complete mission Shadow of Steel
 * Increases Strength with all pieces painted.
 * Requires: None
 * Complete mission Blind Betrayal
 * Increases Strength with all pieces painted.
 * Requires: None
 * Complete mission A New Dawn
 * Increases Strength with all pieces painted.
 * Requires: None
 * Only available by looting the T-60 power armor worn by Arthur Maxson during Airship Down.
 * The paint job can be removed but never reapplied.
 * Increases Charisma with all pieces painted.
 * Requires: None
 * Completing The First Step quest will unlock this paint.
 * Increases Agility with all pieces painted.
 * Requires: None
 * Obtaining the Hot Rodder Magazine will unlock this paint
 * Increases Agility with all pieces painted.
 * Requires: None
 * Obtaining the Hot Rodder Magazine will unlock this paint
 * Increases Agility with all pieces painted.
 * Requires: None
 * Obtaining the Hot Rodder Magazine will unlock this paint
 * Increases Intelligence with all pieces painted.
 * Requires: None
 * Finishing the game with the Institute will unlock this paint
 * Increases Strength with all pieces painted.
 * Requires: Adhesive 4, Aluminum 6, Nuclear material 2
 * Increases Charisma with all pieces painted.
 * Requires: Adhesive 2, Aluminum 4, Plastic 2
 * Increases Perception with all six pieces painted.
 * Requires: None
 * Complete Tradecraft to unlock.
 * Increases Strength with all pieces painted.
 * Requires: None
 * Can be obtained from a terminal in Vim! Pop factory.
 * Increases Agility with all pieces painted.
 * Requires: None
 * Can be obtained from a terminal in Vim! Pop factory.
 * Increases Strength with all pieces painted.
 * Requires: None
 * Available if Contraptions Workshop is installed.
 * Increases Agility with all pieces painted.
 * Requires: None
 * Available if Contraptions Workshop is installed.
 * Increases Agility by 3 with all pieces equipped.
 * Requires: None
 * Only accessible to the Nuka T-51 power armor
 * The paint job can not be removed or applied.

Armored clothing
Many articles of clothing can have Damage and Energy Resistance added at an armor workbench. See ballistic weave for details.