See more: Regulators & Charging Systems
For Big Twin models, Fits 1989 thru 1999 Evolution Big Twin models (except fuel injected models) or models equipped with 32 Amp alternator kit, Plug style D (OEM 74519-88)
Compu-Fire's electronic voltage regulator is voltage output calibrated for maintenance free batteries. The regulator circuitry opens the charging system when the battery is fully charged, resulting in cooler stator operation and extended system life compared to the stock shunt style regulator, which fully loads stator by grounding the output at full charge. Regulators come in a billet aluminum housing with a beautiful chrome finish.