$575.00 USD $599.99 USD

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THE ultimate Lithium style battery compatible upgrade for your BMW Airhead's charging system is this 450w alternator kit.
  • Updated design with fewer components.
  • One kit fits ALL Airheads - no need to know the stator size.
  • Simple installation.
  • Lithium Battery compatible.
  • Will also work with AGM or Lead-Acid batteries with a slightly lower voltage regulation.
  • Mosfet R/R with voltage conditioners to manage voltage ripple and appropriate voltage regulation.
  • Brushless.
  • Ideal for any custom build for a clean simple and powerful electrical system.
  • All components mount in stock locations, no fabricating of brackets etc. required.

The Kit includes all the components to replace your under-performing 240w BOSCH charging system. Featuring a Permanent Magnet Rotor which eliminates the brushes and potential rotor failure. The Hi-Output Stator produces significant AC voltage at lower RPM's not possible with the original system. The new lithium specific MOSFET regulator rectifier is specifically designed to mount under the front engine cover replacing the diode board for a clean, simple installation. With a combined Voltage Regulator / Rectifier, the two components most vulnerable to failure on the BOSCH charging system, namely the diode board and the voltage regulator are eliminated. In addition the kit includes a Rotor Removal Tool, a new timing cover Oil Seal and a Caliper for accurate measurements. Will work with conventional wet acid and AGM batteries, however will have a slightly lower voltage regulation of 14.1 volts (as required by Lithium type batteries).

Complete your upgrade with the EnDuraLast Crank Mounted Ignition System, EDL-IGNS that is specifically designed to mount on this alternator!

NOTE: The /5 Airhead models require a starter relay modification. Please review the Installation Guide for details.

Vehicle Manufacturer: BMW
Application: BMW Airhead Models
Make/Model: BMW R45, R50, R60, R65, R75, R80, R90, R100
Model Years: 1969 to 1996
Power Rating: 450 Watts @ 14 Volts = 32 Amps