Dynatek, Dyna-S ignition module. Dual fire - 70-99 Big Twin (excl. TC) and 71-03 XL Sportster (NU) 515321 Includes hardware and installation instructions

Includes hardware and installation instructions

Replacement bolts that mount the caliper halves together

Black zinc-plated steel fittings with collars sold separately

they bring vintage vibes with a modern edge

Heavy-Duty Chain BreakerMade for use on all 420 to 630 size chains

Dynatek, Dyna-S ignition module. Dual fire - 70-99 Big Twin (excl. TC) and 71-03 XL Sportster (NU) 515321 Includes hardware and installation instructionsDyna S ignition module for dual fire applications. Comes complete with rotor. Can be used for single or dual plugged heads. The required mechanical advance unit must be purchased separately. Note: Dyna coil recommendations: Dyna 5 Ohm for street use, Dyna 3 Ohm for race use. 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