Starting on the inside, a 0.500 In. oversized steel shaft spins in a sealed ball bearing and sintered bushing for long endurance and accurate spark delivery throughout the entire RPM range. Mounted on top of the shaft is an easy-to-adjust chromoly mechanical advance assembly. Different advance springs and stop bushings are supplied so you can choose from 24 curves. A maintenance-free magnetic pick-up provides accurate trigger signals to your MSD Ignition control. A precision-manufactured reluctor that is connected to the shaft is responsible for triggering the pick-up. The distributor is topped off with a high quality black cap and race rotor.

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  CNC machined billet aluminum housing and billet aluminum base
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  Will not accept a vacuum advance canister
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  Must Be Used w/An MSD Ignition Control
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  O-ring seals can be installed for oil press. control (Mods only)
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  Supplied w/Socket Style Distributor Cap And Rotor
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  Special oil tract improves lubrication to the dist./cam gear
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  Nylon pads ensure smooth operation of the advance weights
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  Advance weight pins are staked and tig welded to the plate
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  Mech. advance assem. can be locked out for crank trigger systems
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  Advance plate and weights are fine blanked from chrome moly steel
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  QPQ coated for friction reduction
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  QPQ coated polished steel shaft; guided by sealed ball bearings