Description
The Dynatek Dyna S Single-Fire Electronic Ignition System (DS6-2) delivers improved performance for 1970-2003 Harley-Davidson carbureted models. Featuring all the benefits of the renowned Dyna “S”, plus independent firing of front and rear cylinders, this system allows far more precise timing than stock dual-fire setups. The stock ignition fires both cylinders at once, giving the rear cylinder a “wasted” spark during intake – which can cause harder starting, increased vibration, backfire, raw fuel in the carb, and power loss. Independent cylinder timing produces noticeable gains in power throughout the RPM range, with the largest gains seen on engines with hotter cams. Built as a complete self-contained electronic ignition, the Dyna S is housed behind the ignition cover and retains the factory advance curve with a magnetic rotor and original spark advancer. Not for fuel-injected models. Requires special Dyna coils (5 ohm for street use) and is not recommended with OEM coils. An advance weight mechanism is necessary on 1984-up Harley-Davidsons. A tach adapter is needed when using an electric tach. Made in the U.S.A.
Key Features:
- Independent front/rear cylinder firing for improved timing accuracy
- Increased performance, smoother operation, and reduced vibration
- Utilizes factory advance curve
- Proven design used by top racers for decades
- Requires Dyna 5 ohm coils for street applications
- Not for fuel-injected models
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