Drivetrain› Differentials and Rear-End Components

Zumbrota Drivetrain

11.5" Ring Gear 3.73 Ratio Ring and Pinion Kit w/ Dura Grip LSD

$2,599.49

SKU: ZGK2115

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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Zumbrota Drivetrain ZGK2115 is a differential ring and pinion kit for GM and Chrysler/Dodge/Ram vehicles. It features an 11.5-inch ring gear diameter and a 3.73 gear ratio. This kit includes Koyo bearings and a Yukon Dura Grip clutch-style limited-slip differential.

Designed for applications with a 14-bolt rear cover and a 12-bolt ring gear, this kit utilizes a 4.375-inch outside diameter inner pinion bearing. The USA Standard Quick Kits are a convenient, one-stop solution for common differential repairs.
Show original supplier description
The Zumbrota Drivetrain ZGK2115 is a comprehensive differential ring and pinion kit designed for GM and Chrysler/Dodge/Ram applications. This kit offers a 3.73 gear ratio and an 11.5-inch ring gear diameter, providing an upgrade for your vehicle's rear differential. Included in this package is a Yukon Dura Grip clutch-style limited-slip differential (LSD), ensuring enhanced traction and performance. It is specifically designed for axles with a 14-bolt rear cover and a 12-bolt ring gear. This approach simplifies the purchasing process and ensures you have the right parts to get your vehicle back on the road quickly.

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 NumberZGK2115
CategoryDrivetrain

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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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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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