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Borderlands 4 Build

Flux Chuckerator (5M Tediore chuck)

End Game

Leveling

Harlowe

Flux Generator

By Nepta

Updated on Nov 9, 2025

Nov 9, 2025

Build Overview

The first Traunt to work for Tediore

SaveFile

In this build we are combining Harlowe's strong Green Tree and Tediore Reload's incredible damage formulas + some optimization for maximum chucking damage.

(Shooting/Replicator Shooting Tediores are getting x3 the soup gun damage so they are really good right now)

Strengths And Weaknesses

Big Damage
Great for both bossing and mobbing
The way to go for tediore Harlowe

Ammo Hungry
Can be awkard if you don't have good chucking aim

Skill Tree

Points Spent 0 / 49

LMB Allocate

RMB Unallocate

5/5

3/5

5/5

3/3

2/3

5/5

1/1

5/5

Shooting Tediores get x3 the bonus from Neutron Decay, Creative Overflow and Parallel Circuit

Decoherence and Latent Charge are great bonus element to help your chucking damage

Feedback Loop is so that we get more duration for Group Study which mean more stack.

Runaway Reaction is great for entangling when your action skill is down which enable Confirmative Reality.

Excited State + Nuclear Winter make every single chuck crits.

The Gun Damage from Group Study doesn't get x3 from the Shooting Reload Tediores because they are enhancement Gun Damage but are still important mult to our damage, they also provide Reload Speed per stack which is a cherry on top.

Equipment

Weapons

Repkit & Ordnance

Utilities

GUNS:

Use ANY Tediore with either Shooting Reload or Replicator Shooting Reload. These are the best in term of chucking because for some reason, the thrown damage on these guns receive x3 the Gun Damage soup.

Tediore ARs like I've found to be the best gun type for Bossing

Tediore Pistols and Shotguns can be used as a way to preserve ammo during mobbing

Tediores that can roll Homing Reload like the Chuck are also great mobbing options

Try to get a high ROF Radiation Gun like Convergence to stack up Riddle You This, Confirmative Reality, Feedback Loop and most importantly Neutron Decay

ORDNANCES:

Use Radiation Grenades that have Lingering Payload part or any part that can irradiate enemies, we use these to stack Neutron Decay (be careful of the Lingering Payload Splash Radius)

COMS:

Bio-Robot that has as much points into Feedback Loop as possible. This is important for maintaining Group Study duration and result in more stacks.

SHIELDS:

Watts 4 Dinner for the premium 25% Bonus Shock Damage.

ENHANCEMENT:

Use the Banger enhancement (Mag Calculation one) when bossing as the bonus from this enhancement is multiplicative to most stuff and is only additive to Get Throwin.

A Digi-Divider enhancement can also work well if you can aim

Recycler is great for mobbing when you need to preserve your ammo

REPKIT:

Use any repkit that roll a Reload Speed part, stuff like Triple Bypass and AF1000 is great for their long duration.

Firmware

Repkit & Ordnance

Repkit FirmwareDaed-dy O

Ordnance FirmwareDaed-dy O

Utilities

Class Mod FirmwareBullets to Spare

Shield FirmwareBullets to Spare

Enhancement FirmwareGet Throwin

2/3 Daed-dy O and 2/3 Bullets to Spare for increased Mag Size which work well with the Banger Enhancement

Get Throwin is a fresh mult to your Tediore Chucking

Specialization

Specialization 1Riddle You This

Specialization 2Bullet Train

Specialization 3I Am A Gun

Specialization 4The Best Defense

Riddle You This - A lot of gun soup

I Am A Gun - To give 50% of Harlowe's Gun Damage to Nuclear Winter

Bullet Train - So you can sprint while chucking

The Best Defense - For a little more soup

Gameplay

General Gameplay:

Activate Flux Generator.
Use your Radiation Gun (Convergence) to stack upFeedback Loop, Riddle You This, Neutron Decay while also retriggering Group Study.
After you get around 3-4 Stacks, swap to your main Chucking Gun.