Equipment upgrades

(also frequently called kits or mods) are items that can be made at the Tinker's Bench and can be attached to armor, weapons, tools and shields to give them improved stats.
Only one upgrade can be added to each piece of equipment and, unlike poisons or oils, never wear off.
 can be removed from an item using a , but at the cost of permanently reducing the item's maximum durability by 50%.
==List of upgrades==
Note: this list is only an overview, see individual pages for full information on the items. Some important nuances in gameplay functionality are not included here for space concentration.
Modification Kit	 	 	 	 	 	 	 	 	
 	Any 	 	 	 	 	 	 	 	+50
 	Any 	 	 	 	 	 	 	 	+100
 	Any 	 	 	 	 	 	 	 	+150
 	Any 	 	 	 	 	 	 	+150%	+100%
 	Armor 	+4 	 	 	 	 	 	 	
 	Armor 	+8 	 	 	 	 	 	 	
 	Armor 	+12	 	 	 	 	 	 	
 	Armor 	+15	 	 	 	 	 	 	
 	Armor 	+25	 	 	 	 	 	+3.0 	
 	Armor 	 	 	 	 	 	 	-60% 	
 	Armor 	 	 	 	 	 	-5% 	 	
 	Armor 	 	 	 	 	 	-10%	 	
 	Armor 	 	 	 	 	 	-15%	 	
 	Armor 	 	 	 	 	 	-40%	 	
 	Tool 	 	 	 	 	+1	 	 	
 	Tool 	 	 	 	 	+2	 	 	
 	Tool 	 	 	 	 	+3	 	 	
 	Weapon 	 	+2 	 	 	 	 	 	
 	Weapon 	 	+4 	 	 	 	 	 	
 	Weapon 	 	+6 	 	 	 	 	 	
 	Weapon 	 	+10	 	 	 	 	 	
 	Weapon 	 	+5 	 	+12%	 	 	 	
 	Weapon 	 	 	+10 	 	 	 	 	
 	Weapon 	 	 	+20 	 	 	 	 	
 	Weapon 	 	 	+30 	 	 	 	 	
 	Weapon†	 	 	 	 	 	 	-40% 	
 	Weapon 	 	 	 	 	 	-1 	 	
 	Weapon 	 	 	 	+10%	 	 	 	
 	Weapon 	 	+15	 	 	 	 	 	
 	Weapon 	 	 	 	 	 	-2 	 	
 	Weapon 	 	 	 	 	+9	 	 	
 	Weapon 	 	 	+100	 	 	 	 	
 	Weapon 	 	 	 	+20%	 	 	 	
Modification Kit	 	 	 	 	 	 	 	 	
† = Also applies to shields
===Biles===
Biles dropped by MiGo function like weapon upgrades, but give stat buffs to the player while the weapon is held instead of bonuses to the weapon itself. Buffs from biles cannot stack with buffs gained from food.
All biles reduce weapon durability by 25%.
Bile	Bonus
 	Strength Weapon Damage +15%
 	Agility Weapon Damage +15%
 	Health +60
 	Agility Weapon Damage +15%
 	Stamina +21
 	Carry Weight +45
 	Health +60