85551 Distributor Pro-Billet

This is our most popular performance distributor! The housing is machined from a billet of 6061-T6 aluminum on a state-of-the-art CNC machine producing exact tolerances. For high RPM stability, a 0. 500 in. steel shaft is supported by a sealed ball bearing and a long sintered bushing. This shaft also receives a QPQ coating for friction reduction and resistance to corrosion. A precision machined reluctor is attached to the shaft which triggers the magnetic pickup mounted in the housing. This high output magnetic pickup is the most accurate way to trigger your ignition. Plus, with no moving parts to wear or adjust, the pick up is maintenance free! Just above the pick up is MSD's adjustable mechanical advance assembly. Different springs and stop bushings are supplied so you can tune an advance curve to match your application. Specifications Condition - New. Recommended Use - Street/ Strip/ Track/ Off-Road. Spark Distribution Type - Magnetic Trigger. Spark Advance Type - Mechanical Advance. Includes Cap And Rotor. Drive Gear Type - Iron Gear. Cap Color - Red. Cap Type - HEI/ Male Posts. Features CNC Machined Billet Aluminum Housing And Billet Aluminum Base. Easy To Adjust Mechanical Advance With Supplied Springs And Stop Bushings. Maintenance Free Magnetic Pickup And Precision Reluctor Create Stable Trigger Signals Throughout The RPM Range. Polished Steel Shaft Is QPQ Coated And Guided By A Sealed Ball Bearing, Advance Plate And Weights Are Fine Blanked From Chrome Moly Steel And QPQ Coated For Friction Reduction. Mechanical Advance Assembly Can Be Locked Out For Crank Trigger Systems. Advance Weight Pins Are Staked And TIG Welded To The Plate, Nylon Pads Ensure Smooth Operation Of The Advance Weights.