Drivetrain 4x4 Driveline Components

Advance Adapters, Inc

ATLAS 3.8:1 (H.D. GEAR SET) (COMP CASE)

$953.75

SKU: A01D ATLAS38-SF

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

This is a 3.8:1 low range gear set for the Advance Adapters Atlas transfer case, featuring a 1.25" idler. It includes the 3.8 input gear, 3.8 front output gear, 3.8 cluster gear (1-1/4" pin), and a 3.0/3.8/4.3 low speed gear. Designed to enhance off-road capabilities by providing a lower gear ratio for increased torque and control at low speeds.

Fitment

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Specifications

BrandAdvance Adapters, Inc
Part NumberA01D ATLAS38-SF

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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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