• Two dark gray SPARK main springs for electric guns by AIRSOFT97, showing the physical difference between an irregular pitch non-linear coil layout and a standard linear compression spring coil configuration on a clean white background.
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SPARK (Airsoft97)

SPARK Main Spring for Electric Guns (Made in Japan)

SPARK Main Spring for Electric Guns (Made in Japan)

$12.99 USD
$12.99 USD
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Spring Strenghts
The SPARK Main Spring Series provides an unparalleled internal energy upgrade solution engineered to precisely tune muzzle velocity and cycle rate limits in custom automatic electric guns. Manufactured in Japan by AIRSOFT97, these premium linear and non-linear compression coils are crafted to strict structural tolerances, ensuring long-term velocity consistency and preventing the rapid power drop-off common in budget factory springs.
This master performance collection serves two crucial engineering purposes across its specific variations:
  1. Velocity Optimization (M110 / M120): Delivers a reliable, uniform compression rating to hit clean power limits on outdoor setups, maximizing projectile kinetic energy transfer without over-stressing the motor.
  2. Short-Stroke Specialization (M130 DSG): Tailored specifically for Dual Sector Gear (DSG) arrays, utilizing modified dimensions to prevent premature coil-bind while exerting instantaneous high-tension return force to avoid piston stripping during ultra-high-speed cycles.

Technical Specifications:

  • Material: Premium high-elasticity heat-treated oil-tempered steel alloy
  • Variant Selection Profile:
    • M110: Target power benchmark for tuned field performance (~360-390 FPS depending on air seal and barrel length)
    • M120: High-strength compression option tailored for heavy-weight bb stabilization (~400-430 FPS baseline)
    • M130 DSG: Non-linear high-rate configuration optimized explicitly for short-stroked Dual Sector Gear piston release cycles
  • Package Contents: 1x SPARK Premium Main Gearbox Spring (of chosen selection)
  • Compatibility: Standard Version 2, Version 3, and related generic electric gun gearboxes (including quick-change spring guide frameworks)
  • Origin: 100% Made in Japan
  • Design: Ground flat ends to ensure perfectly straight axial alignment inside the piston core
Tech & Safety Warning: M130 DSG springs must strictly be used in dedicated short-stroke setups. Attempting to cycle an M130 DSG spring on a full 16-tooth standard sector gear stroke can trigger immediate mechanical lockup, motor overheating, or structural gearbox fracture.
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