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Discover the best Borderlands 4 Harlowe build, maximizing elemental damage and instant Action Skill resets for unmatched late-game power.
Harlowe the Gravitar is a rogue scientist turned Vault Hunter who brings her experimental weaponry to bear against the threats of Kairos. While several of Harlowe’s abilities seem to be designed with a supporting role in mind, creating an overpowered build for her is relatively simple. The build primarily revolves around the Neutron Capture Augment for the CHROMA Accelerator Action Skill.
Pros and Cons of the Best Harlowe Build in Borderlands 4
Pros
- Action Skill cooldown resets instantly after shooting, essentially providing infinite Action Skill uses in a battle.
- Gun Damage is unimportant, and only a fast-firing weapon is required for the build.
- Legendary gear is good to have, but optional.
Cons
- This is a late-game build requiring significant investments in skills and gear to increase Elemental, Skill, and Action Skill Damage.
Borderlands 4 Harlowe Build Skill Tree Setup: Passives, Augment, and Capstone
The main focus of the skill tree investments is to increase:
- Fire Rate
- Elemental Damage
- Action Skill Damage
- Skill Damage
Passives and Bonuses
Creative Bursts (Red) Skill Tree
- Cyclotron: 5
- Fuzzy Math: 5
- Elementary: 2
- Enriched: 3
Branch 2
- Poisoned Sun: 5
- Fissile Launcher: 2
- Chain Reactor: 3
- Dirty Bomb: 1
Branch 3
- Mechanical Brilliance: 5
Seize the Day (Blue) Skill Tree
The Creative Bursts skill tree provides all the damage output needed for the build, and investments in Seize the Day are for rounding out the build with greater critical chance, increased survivability, and improved fire rate.
- Quantum Immortality: 4
- Make Extraordinary: 5
- Bright Future: 8 (3 from Class Mod)
- Ripple Effect: 1
Branch 1
- Concurrence: 1 (1 from Class Mod)
- Stun Lock: 1 (1 from Class Mod)
Branch 2
- Keep Ice On That: 3
Branch 3
- Indiscrete Math: 2 (2 from Class Mod)
Augment
- Neutron Capture
Whatever damage Harlowe’s Unstable Energy Pocket deals to enemies is stored up. Whenever you trigger the Action Skill again and explode the Unstable Energy Pocket, a portion of that Stored Damage is transferred to Harlowe’s weapon. She then deals bonus Radiation Damage that is 4% of the Action Skill Damage stored for 6 seconds. With a fast-firing gun, the damage racks up to a ludicrous degree.
Capstone
- Demon Core
Best Weapon and Gear Loadout for Harlowe Build in Borderlands 4
Weapons
- Weapon Type: SMG
- Manufacturer: Vladof
- Alt Fire: Taser
- Element: Shock / Radiation / Cryo
The best weapons for this build are Vladof SMGs with a high fire rate, large magazine size, and Taser Alt Fire attachments. Each SMG shot and each taser hit applies Neutron Capture, dealing 4% stored Action Skill Damage with each instance.
Class Mod
- Professional Skeptic
- +2 Indiscrete Math
- +1 Stun Lock
- +1 Concurrence
- +3 Bright Future
The Gravitar Class Mod restores Action Skill Cooldown by 5% every time you shoot an enemy with a status effect. This means shooting an enemy 20 times will fully reset your Action Skill Cooldown.
Ordnance
- Throwing Knife
- Jacobs: Guarantees critical hits from grenades when hitting weak spots
Firmware Gear Set
- Bullets to Spare
- 1 Item Bonus: Increases Gun Fire Rate by 5%
- 2 Item Bonus: Increases Magazine Size by 20%
- 3 Item Bonus: Increases Fire Rate by 50% of Magazine Size
Also read: Borderlands 4: All Firmware Sets and Bonuses
Repkit
Focus on Repkit cooldown reduction and increased health regeneration when choosing your Repkit to improve survivability.
Best Specialization Options for Harlowe Build in Borderlands 4
- Sharpshooter
- Runner
- In the Zone
- I Am a Gun
- Honed Mind
- Contamination
- The Best Defense
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