Spyke single fire coil, 12V / 3 Ohm - 65-99 B.T.; 65-03 XL. For carbureted models with custom single fire electronic ignition (excl. Twin Cam & other single fire applications) (NU) 517740 Large styles measure 1

Large styles measure 1

Serious performance cams with still stock like low-end performance

Custom smooth style replacement (ribbed style was Factory standard)

Manufactured from woven silica with a flexible aluminized finish and a self-adhesive adhesive strong composite backing

Spyke single fire coil, 12V / 3 Ohm - 65-99 B.T.; 65-03 XL. For carbureted models with custom single fire electronic ignition (excl. Twin Cam & other single fire applications) (NU) 517740 Large styles measure 1Small High Performance coil with 45. 000 Volt output and extremely quick rise and fall times. Will fire at very low voltage for ease of starting. Mounts under stock covers. Note: It is recommended to use ignition modules & coils of the same manufacturer. Intermixing different brands may cause premature failure. Note: Difference between Single & Dual Fire: Dual Fire This is the way the earlier, pre Twin Cam, engines work. A single coil is used and both