Rick's Motorsport Electrics Aftermarket Lithium-Ion Compatible Rectifier-Regulator is designed with a lower voltage set point to work with lithium-ion batteries. Rick's part # 14-113 is a plug n play piece for Vintage Honda Street Bikes with the following OE #'s 31600-460-731 and 31600-426-000. *Please test your rotor before installing the new rectifier-regulator. **This rec-reg is not for use with standard lead-acid batteries. The voltage set point is 14V +/- .2. Please contact the manufacturer of your Lithium-Ion Battery to ensure our product has the correct setpoint for their product. ***Rick's Motorsport Electrics One Year Product Warranty is for the Rec-Reg only. Rick's warranty does not cover batteries of any type.