SiJun SJ HK416 Gearbox

Engineered for SiJun HK416C & HK416D platforms, this OEM-grade gearbox combines a rugged nylon shell with high-strength metal gears for tournament-ready reliability. The complete assembly comes Tamiya-plug ready for hassle-free installation in your 416-series blaster.

Professional Features:

⚙️ Precision Metal Gearset - Handles high-speed firing without stripping
🛡️ Reinforced Nylon Shell - Impact-resistant housing for intense gameplay
🔌 Tamiya Connector - Standard plug-and-play compatibility
⚡ V2.5 Optimized Design - Enhanced durability over previous versions

Technical Specifications:

• Brand: SiJun (Factory Original)
• Model: HK416 V2.5 Series
• Construction: Nylon shell + metal internals
• Color: Tactical black
• Connector: Standard Tamiya plug

Package Includes:

📦 1x Complete HK416 Gearbox Assembly

Why This OEM Upgrade?
✔ Direct replacement for worn components
✔ Metal-on-nylon operation reduces wear
✔ Maintains perfect factory alignment
✔ Trusted reliability for competitive play

Compatible Models:

• sj hk416c  (V2.5)

• sj hk416d

Pro Tip: Pair with 11.1V battery for maximum cycle rate!