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  • Metal mechanical component on a white background
  • Side view of silver Autocross Series Steering Gear Box.
  • Close-up of a mechanical component with visible branding on a dark background
  • Metal mechanical component with 'PSC' branding on a white background
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BIG BORE XD® Autocross Series Steering Gear – Chevy/GMC C‑Series (1977–1986)

BIG BORE XD® Autocross Series Steering Gear – Chevy/GMC C‑Series (1977–1986)

$1,495.00
$1,495.00
Sale Out of Stock
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Part Number: SGX041‑10S

Port Type

This BIG BORE XD Autocross Series gear is built for the folks who want their classic C‑Series Chevy or GMC truck to steer like something far newer and far tighter. It’s engineered for quick response, steady on‑center feel, and the kind of durability that handles hard cornering without getting sloppy over time.

The billet components, upgraded internals, and precision‑set lash give these gears a clean, confident feel on the street and at the autocross course. Whether the truck is lowered, restomod’d, or just worn out from years of hauling, this gear wakes the steering right up and makes the whole truck feel more connected.

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About:About:

Why you’ll love it

  • BIG BORE XD design gives more control and better feedback
  • Tuned for quick, crisp steering input—ideal for autocross and performance builds
  • Strong internal components built to hold alignment and resist wear
  • Smooth, predictable return‑to‑center
  • Designed for classic Chevy/GMC trucks that deserve modern steering feel

Tech InfoTech Info

Heads‑up for installers

Center the gear before setting the sector lash and make sure the pitman arm is indexed correctly. Verify hose routing and clearances, especially on lowered trucks. Torque specs matter here, so don’t guess—use proper values for the pitman, frame fasteners, and steering joints.

Fitment

  • 1977–1986 Chevy C‑Series
  • 1977–1986 GMC C‑Series
  • Direct‑fit BOX for factory steering configurations

Ideal for

  • Restomod C10 and C20 builds
  • Autocross‑prepped classic trucks
  • Performance street trucks
  • Anyone tired of loose, vague factory steering

Specs

  • Steering Gear Type: BIG BORE XD Autocross Series
  • Vehicle: Chevy/GMC C‑Series (1977–1986)
  • Build: Upgraded internals with performance‑tuned setup
  • Input/Output: Matches factory chassis interfaces
  • Construction: Reinforced housing with billet components

What’s included

  • (1) BIG BORE XD Autocross Series steering gear
California Prop 65 Warning

California Prop 65 Warning

This product can expose you to chemicals including lead and di (2-ethylhexyl) phthalate, which are known to the State of California to cause cancer, birth defects or other reproductive harm.

For more information, go to www.P65Warnings.ca.gov