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MSD Crank Trigger


MSD Ignition
MSD Crank Trigger

Product images may differ from actual product appearance.

Flying Magnet Crank Trigger

Stable ignition timing is a necessity in performance engines. In most cases, a distributor will do just fine, but when you start making big-time horsepower with extreme cylinder pressures, the timing is critical to both the performance and the life of the engine. The ignition must be triggered at a precise time in relation to the position of the piston the compression stroke. Think of all the mechanical stretching and flexing that takes place through the timing chain, gears and cam before the distributor pickup triggers the ignition. The crankshaft on the other hand, knows exactly where each piston is, plus it is the most stable component of the engine in relation to piston position. That's why a crank trigger for timing is so important in high horsepower engine applications.

Most crank triggers use steel studs that stick out of the wheel to trigger a magnetic pickup. However, the stationary magnet can be triggered by track debris, vibration or even bolts. MSD uses a non-magnetic pickup which gets triggered by powerful magnets that are embedded in the trigger wheel. This ''flying magnet'' design cannot be false triggered. The only way to trigger the ignition is when a magnet passes the pickup.

This non-magnet pickup is securely held in position by CNC machined aluminum brackets. These brackets feature a long adjustment slot providing a large range of accurate timing adjustments. Plus, many of the brackets can be used on either side of the balancer for easy installation. Most kits are supplied with several spacers for different accessories and pulley systems.

MSD PREVENTS FALSE TRIGGERING
The crank trigger timing wheel is also machined out of 6061-T6 aluminum and anodized MSD Red. Each ''rare earth'' magnet is pressed and then riveted into the wheel to handle the fierce rpm and vibration that high horsepower engines put out. By installing the magnets in the trigger wheel, MSD has done away with the chance of false triggering. As the engine is rotating, the magnets pass the Non-Magnetic Pickup and create a signal that triggers the Ignition. The magnets are the only thing that can trigger the ignition making it the most reliable and accurate way to trigger your ignition.

All MSD Flying Magnet Crank Trigger Kits must be used with an MSD Ignition Control. Kits include mounting brackets, trigger wheel, non-magnetic pickup, centering ring and mounting hardware.

NOTE: A locked-out distributor must be used with a crank trigger system.



21 Products
Chevy Small Block

121-8600
Crank Trigger
  • Chevy SB
  • 6.25" Balancer
    More info on MSD Ignition 8600

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    Installation Instructions for MSD Ignition 8600
  • $257.99
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    121-8610
    Crank Trigger
  • Chevy SB
  • 7" Balancer
    More info on MSD Ignition 8610

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    Installation Instructions for MSD Ignition 8610
  • $257.99
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    121-8611
    Crank Trigger Replacement Wheel
  • Chevy SB
  • 7" Balancer
    More info on MSD Ignition 8611

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  • $154.95
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    121-8615
    Crank Trigger
  • Chevy SB
  • 8" Balancer
    More info on MSD Ignition 8615

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    Installation Instructions for MSD Ignition 8615
  • $269.99
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    121-ASY16719
    MSD Ignition Replacement Crank Trigger Wheel
  • 6.25 in. Diameter
  • Aluminum
  • Red Anodized
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  • $129.99
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    Chevy Big Block

    121-8620
    Crank Trigger
  • Chevy BB
  • 8" Balancer
    More info on MSD Ignition 8620

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    Installation Instructions for MSD Ignition 8620
  • $267.99
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    121-8621
    Crank Trigger Replacement Wheel
  • Chevy BB
  • 8"
    More info on MSD Ignition 8621

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  • $179.95
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    Chrysler Small Block

    121-8633
    Crank Trigger Kit
  • Chrysler SB
  • 7.25" Balancer
    More info on MSD Ignition 8633

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    Installation Instructions for MSD Ignition 8633
  • $321.95
    Order Today Ships 04/30/14
    Chrysler Big Block

    121-8636
    Crank Trigger Kit
  • Chrysler BB
  • 7.25" Balancer
    More info on MSD Ignition 8636

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    Installation Instructions for MSD Ignition 8636
  • $324.99
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    121-ASY12728
    MSD Ignition Wheel Only From Kit #8636
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    $159.99
    Order Today Ships 04/30/14
    Ford Small Block

    121-8640
    Crank Trigger Kit
  • Ford 289/302/351W
  • 6.562" Balancer
    More info on MSD Ignition 8640

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    Installation Instructions for MSD Ignition 8640
  • $267.99
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    Ford Big Block

    121-8644
    Crank Trigger Kit
  • Ford BB (except Cleveland)
  • 7.25" Balancer
    More info on MSD Ignition 8644

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    Installation Instructions for MSD Ignition 8644
  • $286.99
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    Pontiac

    121-8650
    Crank Trigger Kit
  • Pontiac V8
  • 7" Balancer
    More info on MSD Ignition 8650

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    Installation Instructions for MSD Ignition 8650
  • $321.95
    Order Today Ships 05/08/14
    Universal Kit

    121-8655
    Crank Trigger Kit
  • Universal
    More info on MSD Ignition 8655

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    Installation Instructions for MSD Ignition 8655
  • $321.95
    Order Today Ships 05/08/14
    Crank Trigger Accessory

    121-8605
    Crank Trigger EZ-Adjust Kit
  • Note: Bracket Not Included
    More info on MSD Ignition 8605

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    Installation Instructions for MSD Ignition 8605
  • $39.99
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    Replacement Pickups

    121-2346
    Universal Cam Sync Pickup
    More info on MSD Ignition 2346

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    Installation Instructions for MSD Ignition 2346
    $92.95
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    121-8154
    Replacement Non-Magnetic Pickup
    More info on MSD Ignition 8154

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    $180.95
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    121-8159
    MSD Pickup Harness 36"
    More info on MSD Ignition 8159
    • FREE
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    $149.95
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    121-8276
    Replacement Pick-Up
  • Non-Magnetic
    More info on MSD Ignition 8276

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  • $79.99
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    121-8505
    Replacement Magnetic Pickup
  • Old Style Crank Triggers Only
    More info on MSD Ignition 8505

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  • $111.99
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    121-ASY10002
    Pick Up Holder
  • Big Block Chevy
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  • $41.40
    Order Today Ships 04/30/14

    21 Products