Zumbrota Drivetrain

Rear Axle Assembly 9.25" Ring Gear 3.55 Ratio Open Differential

$3,098.89

SKU: RAA435-10080B

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Zumbrota Drivetrain Remanufactured Rear Axle Assembly is built to the highest standards of precision and reliability for your 2019-2025 Ram 1500 New Body Style with 6-lug wheels. Each axle assembly undergoes a thorough inspection for straightness, cracks, and surface wear. All internal components, including ring and pinions, internal gears, clutches, and carriers, are fully inspected and tested. To ensure longevity and precise setup, all bearings and seals are replaced, and gears are inspected for optimal tooth contact patterns and correct rolling torque using inch-pound measurements. The assembly also ensures correct gear backlash for proper lubrication and quiet operation, with axle tubes inspected for OEM straightness. Zumbrota employs an exclusive hydro-blast rinse and sandblasting procedure, followed by a proprietary shot-enticed deep cleaning process for internal and external parts, setting a high standard for axle assembly remanufacturing. This specific assembly features a ZF 9.25-inch ring gear, a 3.55 gear ratio, an open differential, and includes brakes and backing plates. It does not include hubs or axle shafts. This assembly is compatible with 2019-2025 Ram 1500 New Body Style models equipped with 6-lug wheels and a 3.55 gear ratio.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandZumbrota Drivetrain
Part NumberRAA435-10080B
CategoryDrivetrain

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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