Daytona Twin Tec Internal Ignition 1005 for 1970-1999 Harley-Davidson Big Twin and Sportster
Reclaim the performance your engine is capable of without compromise. The Daytona Twin Tec internal ignition brings modern programmable control to a broad range of carbureted Harley-Davidson platforms — delivering crisper throttle response, smoother cruising, and the confidence of a properly timed engine on every ride.
Key Features
- Direct-fit replacement for internal nose cone style ignition systems on carbureted Big Twin and Sportster models
- Two selectable advance curve families accommodate both stock and modified engine builds
- Selectable multi-spark mode for quick starting and smooth cruising
- Four rotary switches control timing adjustments, single/dual ignition mode, and RPM limit in 100 RPM increments
- Coil outputs protected against short circuits
- Tachometer wire used for PC link — connector included
- Optional USB interface and free custom curve software available at daytona-twintec.com
- Easy-to-follow installation instructions included
- Made in the U.S.A.
- CARB-exempt version available — complies with California A.R.B. E.O. No. D-641-1
- Standard version: not legal for sale or use on pollution-controlled vehicles
Technical Specifications
- Ignition Type: Internal nose cone style, single-fire capable
- Advance Curves: Two selectable families for stock and modified engine applications
- RPM Limit Adjustment: Adjustable in 100 RPM increments
- Multi-Spark Mode: Selectable
- Ignition Modes: Single or dual fire, selectable via rotary switch
- Coil Requirement: Minimum 3-ohm primary resistance
- Plug Wire Requirement: Low-resistance spiral-core suppression-type plug wires required
- PC Link Connection: Via tachometer wire — connector included
- Programming Interface: Optional USB interface required for custom advance curves (sold separately)
- CARB Compliance: CARB-exempt version available per California A.R.B. E.O. No. D-641-1
- Country of Origin: United States
Fitment Notes
- Designed for internal nose cone style ignition applications only — verify your ignition housing type before ordering
- Requires coils with a minimum of 3-ohm primary resistance
- Requires low-resistance spiral-core suppression-type plug wires
- Requires timing rotor — per manufacturer specification, compatible with OEM-style timing rotor #32402-83 or equivalent part #2101-0234 (verify current availability with your supplier)
- Will not work on fuel-injected models
- Standard version is not legal for sale or use on pollution-controlled vehicles — select the CARB-exempt version for California and emissions-regulated applications
- Optional USB interface for custom advance curve programming is sold separately; free software available at daytona-twintec.com
- Please review the Fitment tab for the complete year and model breakdown
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