Accel, single/double fire ignition module

Compatible with single and dual fire ignition set-ups. Features 14 advance curves, from stock to extreme, and an adjustable rev limiter. VOES input and tachometer output. Static timing of the front cylinder spark plug with LED light for easy adjustment.
Note: The difference between single and double fire is explained below:
- Dual fire:
This is how pre-Twin Cam engines operate. A single coil is used and both spark plugs fire simultaneously. It is the simplest system. The "wasted" spark is sometimes said to reduce power.
- Single fire:
This is how stock Twin Cam engines work (2000 models onwards). Two independent coils fire the spark plugs individually, with only the spark plug of the cylinder on the compression stroke being activated. These engines are said to vibrate less and may improve power. The effects are more noticeable with more aggressive camshafts and at high RPMs.


Specifications


Brand
Accel


Application
70-99 Big Twin (Excl. Twin Cam, Excl. injection); 71-03 XL Sportster (NU)


Packaging weight
0.34 kg


HS Code
85113000


Motorcycle family
BIG TWIN, DYNA, FX, FXR, SOFTAIL, SPORTSTER, TOURING


Original name
Accel, single fire/dual fire ignition module