USA Standard Gear

GM 9.25" 3.42 Ring and Pinion Gear Set

$506.44

SKU: ZG GM9.25-342R

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

Description

The USA Standard Gear ZG GM9.25-342R is a high-performance ring and pinion gear set engineered to enhance the capabilities of your GM 9.25" IFS reverse rotation differential. Featuring a robust 9.25-inch ring gear diameter, a 30-spline pinion, and 12 ring gear bolts, this set is specifically designed with a 3.42 ratio to optimize power delivery. They are available for both front and rear applications and are instrumental in improving towing capacity, off-road performance, and racing responsiveness. For optimal towing or racing performance, a higher gear ratio like this 3.42 set allows your engine to transfer more power to the ground. This not only boosts performance but also reduces stress on the engine and transmission, contributing to a longer drivetrain life. USA Standard Gear ensures rigorous in-house quality evaluation for all its sets, guaranteeing they pass stringent dimensional, material, and fitment testing. Installation of new gears in your axle typically requires common hand tools, a hydraulic press, and a dial indicator for correct setup. It is recommended to also acquire a master overhaul kit, which includes essential components like new bearings, seals, shims, and a pinion crush sleeve to ensure quiet and reliable operation for years to come. USA Standard Gear backs its ring and pinion sets with a one-year warranty against manufacturer defects.

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

BrandUSA Standard Gear
Part NumberZG GM9.25-342R
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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