The RCEXL Twin Cylinder Ignition System with 90° CM-6 / 10mm spark plug caps is engineered for serious RC pilots who demand precision, reliability, and effortless engine performance. Designed specifically for twin-cylinder petrol engines, this high-quality CDI unit delivers consistent ignition timing and improved throttle response across the full RPM range.

Featuring 90-degree spark plug caps with a 14mm hex (9/16") design, this system ensures a secure fit while reducing clearance issues in tight engine bays. The intelligent timing curve automatically adjusts based on RPM, advancing up to 30° BTDC and retarding during startup for smoother, more reliable ignition.

With its dual-spark firing system, the ignition unit fires each plug twice per cycle during startup-making engine starting quicker and more dependable. Compatible with a wide voltage range (6V–14.4V) and equipped with dual Futaba-style connectors for battery and tachometer integration, installation is straightforward and efficient.

Perfect for large-scale RC aircraft, this ignition system provides the performance and dependability required for demanding flying conditions.

Key Features

✅ Designed for twin-cylinder RC petrol engines
✅ 90° CM-6 / 10mm spark plug caps (14mm hex) for compact installation
✅ Dual-spark start system for easier engine ignition
✅ Intelligent automatic timing curve for smooth performance
✅ Wide operating voltage range (6V–14.4V)
✅ Dual Futaba female connectors for easy setup
✅ Stable, reliable CDI performance for large-scale models

Perfect For

• Large-scale RC aircraft
  
• Twin-cylinder petrol engines
  
• Scale and aerobatic model planes
  
• Pilots seeking reliable ignition performance
  
• Advanced RC builds requiring precision timing
  

Product Summary

A high-performance twin-cylinder ignition system with smart timing control, dual-spark starting, and compact 90° plug caps—ideal for reliable and smooth-running RC petrol engines.

Specifications

• Brand: RCEXL
  
• Product Type: Twin Cylinder CDI Ignition System
  
• Engine Compatibility: Twin-cylinder gas engines
  
• Spark Plug Cap: CM-6 / 10mm, 90° angle
  
• Hex Size: 14mm (9/16")
  
• CDI Unit Weight: 178g
  
• Operating Voltage: 6V – 14.4V
  
• Connectors: Futaba Female (Battery & Tachometer)
  
• Recommended Timing: 30° BTDC
  
• Start Timing: Auto retard to 20° BTDC (100–2000 RPM)
  
• Timing Curve: Automatic up to 4000 RPM, then fixed at 30° BTDC
  
• Start-Up Aid: Dual spark per cycle

Why Buy From Probuild Aircraft?

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