Kill Spring
Turn 100% damage into HP. The ultimate in-game sustain repkit. Ideal for wave farming.
Purchase the Borderlands 4 Kill Spring Repkit through BoostRoyal and secure one of the premier sustain utilities available. Transform 100% of your overkill damage into healing orbs, replenish your armor segments, and achieve total control during wave farming with limitless survivability.
What you will receive
- ✨ Kill Spring Repkit obtained and added to your inventory;
- 🔋 A sustain mechanic designed to keep your Vault Hunter effectively immortal during intense mob-heavy encounters;
- ⚙️ Item level of your choice (25–50, adjustable dropdown);
- 🔗 Healing orbs that home in on and mend teammates — perfect for co-op play;
- 🚀 Swift service – typically initiated in 10–15 minutes.
Requirements
🔑 Capability to utilize the in-game trading feature;
🕹️ An active Borderlands 4 account.
Our Process
Self-Play (Trade):
- Get your Borderlands 4 Kill Spring! Please share your feedback on our Trustpilot page.
- You play alongside our PRO booster;
- The Kill Spring is traded straight to your character;
- You retain full ownership of the item plus all associated bonuses;
Frequently asked questions
Is Kill Spring a guaranteed drop from Axemaul?+
It is not a guaranteed item, as it is a random legendary drop. Nevertheless, our boosters will persist in farming until you have obtained the Kill Spring Repkit.
Does Kill Spring provide healing for my allies, or is it just for me?+
The Blood Siphon passive on Kill Spring creates homing orbs that also track and heal your nearby allies. This makes it a unique item that enhances your performance in both solo and co-op play.
Is Kill Spring viable for boss fights?+
This item performs best during encounters with many mobs, given that its effect relies on kills to activate. While it offers sustain during boss fights if adds are present, it is most powerful in wave content or farming scenarios.
Which builds get the most out of Kill Spring?+
Any setup that prioritizes sustained killing power. For instance, Amon’s melee Forgeknight setups and Vex’s crit-heavy Grave Fiends builds see significant benefits, because every kill triggers the sustain loop again.
How does this item work with other legendaries?+
Kill Spring is a component of one of the most well-known combos in Borderlands 4:
- By using the Firewerks Shield, you can trigger an infinite missile swarm chain;
- By using the Onion Shield, you can maintain full health while triggering frequent invulnerability phases.













