MSD Pro-Billet Distributors

4.75 out of 5 stars 406 Customer Reviews

MSD Pro-Billet distributors share the same CNC machining techniques as the rest of the MSD distributor line. They feature a housing that's machined from high-qualit

MSD Pro-Billet distributors share the same CNC machining techniques as the rest of the MSD distributor line. They feature a housing that's machined from high-quality 6061-T6 aluminum for durability and show-quality looks. Their oversized shaft receives a QPQ coating for friction reduction and corrosion resistance, with the added strength of two sealed ball bearings that guide the shaft accurately at well over 10,000 rpm. An extra-long sintered bushing replaces the ball bearing at the bottom of Chevrolet models. TIG-welded on top of the polished steel shaft is MSD's accurate mechanical advance assembly. The weights are supported by nylon pads that allow the advance to operate smoothly throughout the rpm range.

For all-out racing, the advance mechanism can also be easily locked out. To accurately trigger the ignition, a high-output magnetic pickup is bolted to the base. This pickup produces a precise trigger signal that will never vary more than one degree at any rpm. A durable gear is installed for performance applications, and an MSD red cap with brass terminals and race rotor is supplied. They're available in standard and small diameter models for applications with limited clearance, and require the use of a separate ignition box such as an MSD 6, 7, 8, or 10 Series ignition.

Showing In Stock Items. Show All 9 Items.

Results 1 - 9 of 9

MSD Pro-Billet Distributors 85551

Distributor, Pro-Billet, Mech. Adv., Magnetic Trigger, 6.937 in. Tall, Small Red Cap, 0.500 in. Shaft, Needs MSD Box, Chevy, Big/Small Block, Each

Part Number: MSD-85551

4.77 out of 5 stars ( 128 )

Estimated Ship Date: Today

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MSD Pro-Billet Distributors 8570

Distributor, Pro-Billet, Small Base, Magnetic Trigger, Mechanical Advance, Chevy, Big/Small Block, Each

Part Number: MSD-8570

4.77 out of 5 stars ( 26 )

Estimated Ship Date: Today

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MSD Pro-Billet Distributors 85555

Distributor, Pro-Billet, Magnetic Trigger, Mechanical Advance, Black Cap, Black Housing, Chevy, Big/Small Block, Each

Part Number: MSD-85555

4.83 out of 5 stars ( 18 )

Estimated Ship Date: Today

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MSD Pro-Billet Distributors 85561

Distributor, Pro-Billet, Male/HEI, with Red Cap, Magnetic Trigger, Mechanical Advance, Slip Collar, Iron Gear, O-rings, Chevy, Big/Small Block, Each

Part Number: MSD-85561

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Today

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MSD Pro-Billet Distributors 85557

Distributor, Pro-Billet, Magnetic Trigger, Mechanical Advance, Chevy, Big/Small Block, Each

Part Number: MSD-85557

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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MSD Pro-Billet Distributors 85701

Distributor, Pro-Billet, Small Base, Slip Collar, Magnetic Trigger, Mechanical Advance, Chevy, Small Block, Each

Part Number: MSD-85701

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Today

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MSD Pro-Billet Distributors 85703

Distributor, Pro-Billet, Small Base, Magnetic Trigger, Mechanical Advance, Chevy, Big/Small Block, Each

Part Number: MSD-85703

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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MSD Pro-Billet Distributors 85705

Distributors, Pro-Billet, Small Base, Magnetic, Male/HEI, Locked Advance, Oversized +0.006 in. Bronze Gear, Black Cap, Chevy, Small/Big Block, Each

Part Number: MSD-85705

Not Yet Reviewed

Estimated Ship Date: Today

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MSD Pro-Billet Distributors 8547

Distributor, Pro-Billet, Magnetic Trigger, Mechanical Advance, Chevy, Big/Small Block, Each

Part Number: MSD-8547

Not Yet Reviewed

Estimated Ship Date: Feb 11, 2026 if ordered today

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Estimated Ship Date: Feb 11, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Summit Racing™ Billet Distributors SUM-850051-1

5 out of 5 stars ( 4 )

Estimated Ship Date: Today

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