MSD Crank Trigger Wheel Kit - Flying Magnet - Hall-Effect - BBC - 8 in.

The MSD Flying Magnet Crank trigger is now available with a Hall-Effect sensor making it the most accurate way to trigger your EFI. The kit installs easily and uses rigid aluminum mounting bracketry and hardware that will not flex and cause timing fluctuations. Powerful magnets are embedded in a 3/8" thick aluminum trigger wheel that will send your EFI a clean signal for every firing.