Helios XVIII-700 Blaster Upgrade Spring

Push your Nerf Rival Helios to its limits with this high-tension piano steel spring upgrade! Engineered for competitive players, this 13kg or 15kg spring delivers elite-level FPS and unmatched consistency—perfect for tournaments or intense battles.

Why Upgrade?

🔥 Tournament-Ready Power – 15kg version achieves 140-160 FPS (with tuning)
🎯 Precision Wound Coils – Ultra-consistent shot velocity
⚡ Piano Steel Construction – Won’t fatigue even after thousands of shots
🔧 Complete Installation Kit – Includes O-ring for perfect air seal

Choose Your Power Level:

✔ 13kg (Pro Balanced) – Stronger than stock, smoother prime
✔ 15kg (Elite Power) – Max FPS for competitive dominance

What’s Included?

• 1x Helios XVIII-700 Upgrade Spring (12kg or 15kg)

• 1x High-quality O-ring

Tech Specs:

• Material: Military-grade piano steel

• FPS Gain: 120-160+ (depending on tuning)

• Compatibility: Nerf Rival Helios XVIII-700 ONLY

Warning:
⚠ 15kg version requires reinforced internals (catch spring recommended)
⚠ Firm priming force needed – best for ages 14+

Dominate with elite-tier upgrades! 🚀 Basic modding skills required for installation.