The Readspeed 9 Stage CDI is a digitally controlled ignition unit designed for 4-stroke engines. It allows both advance and retard timing adjustment via a simple switch system, providing precise ignition control without the need for ECU remapping.

With 4 advance settings, 4 retard settings and a standard base setting, this CDI offers flexible tuning for both standard and performance-modified engines.

Ideal for vehicles fitted with performance cylinder kits or requiring fine timing adjustment for fuel quality and engine protection.

Key Features

• 9 stage adjustment (4 Advance / 4 Retard / Standard)

• Suitable for most 4-stroke engines

• Compatible with EFI systems

• Increased ignition energy and stronger spark

• Adjustable ignition angle (0–9°)

• RPM range: 500–16,000rpm

• Operating voltage: 9–16V

• Compact design – fits small spaces

• 55mm centre-to-centre mounting

• Plug and play installation