5.0 · 1 review
SKU: 556-181

7-Inch 12-1x Crank Trigger Wheel

$306.99
FREE delivery
Description

ABOUT THIS PRODUCT

Designed to work directly with ATI 917777, 917211 or 917234.

Product Features:
  • Most accurate way to trigger your electronic fuel injection (EFI), can be installed as 12-1 or 12x
  • Powerful magnets embedded in a 3/8-inch thick billet 6061-T6 aluminum trigger wheel
  • 3-wire Hall-Effect Sensor that is not easily susceptible to EMI/RFI Interference
  • Engine specific kits include a direct bolt-on billet aluminum pick up bracket
  • Rigid mounting that will not flex and cause timing fluctuation
  • Easy to install much like traditional MSD Crank Trigger Kits
  • Included installation instructions cover mechanical setup and provide step-by-step Holley EFI Software Setup
Specifications
Brand
Holley EFI (770)
SKU
556-181
Product type
Automotive
Guides & Resources
User Guide
Returns Policy
Shipping Information

Free shipping on all orders. Most items ship next business day after your order is placed.

Returns Policy

Returns are accepted when the product is in its original, unopened container. Contact us if you have questions about your order.

View full returns policy

Customer Reviews

5.0

Based on 1 review

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R
Riley N. Verified Buyer
06/08/2025

No complaints

Quick delivery and the product exceeded my expectations.

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