Drivetrain› Differentials and Rear-End Components

Motive Gear

K10/20 77-82 GM8.5F/12BT 4.11X

$1,140.26

SKU: M01Z MGK-209

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In Stock
Ships by Jun 10
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Non-Returnable Item
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Description

Motive Gear MGK-209 is a differential ring and pinion kit for GM 8.5" and GM 8.875" (12 Bolt Truck) differentials. It features a 4.11 ratio and a thick rear ring gear. This kit requires a 2.73 and numerically higher front carrier and fits a 2.76 to 3.42 rear carrier. Motive Gear emphasizes its extensive testing and manufacturing methods, resulting in components used in racing worldwide.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandMotive Gear
Part NumberM01Z MGK-209

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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