Dynatek, Dyna-S ignition module. Twin ignition

Dyna-S ignition module for dual spark applications. Comes complete with rotor. Can be used on heads with one or two spark plugs. The required mechanical advance unit must be purchased separately.
Note: Dyna coil recommendations: 5 Ohm Dyna for street use, 3 Ohm Dyna for race use.
Note: It is recommended to use ignition modules and coils from the same manufacturer. Mixing different brands may cause premature failure.
Note: Difference between dual and single fire ignition:
- Dual Spark (Dual Fire): This is the operating system of pre-Twin Cam engines. A single coil is used and both spark plugs fire simultaneously. It is the simplest system. The "wasted" spark is said to slightly reduce power.
- Single fire: This is the operating system of stock (00-up) Twin Cam engines. 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 can improve power. The effects will be more noticeable with more aggressive camshafts and at higher RPMs.
Note: For the single fire Dyna-S ignition module, see code 902530.


Specifications


Brand
Dynatek


Application
70-99 Big Twin (Excl. TC) and 71-03 XL Sportster (NU)


Packaging weight
0.18 kg


HS Code
85113000


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


Original name
Dynatek, Dyna-S ignition module. Dual fire