Drivetrain› Differentials and Rear-End Components

RPM Transmissions

Stage III Differential

$3,795.00

SKU: RPM-C6Z-D3

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The RPM Transmissions Stage III Differential is a high-performance differential designed for the 2006-2013 Corvette ZR1, Z06, and Grand Sport models. It features a media-blasted transmission case for durability. This differential includes upgraded components such as carbon clutch packs, HD preload springs, and 300M stub shafts.
Show original supplier description
The RPM Transmissions Stage III Differential is a premium upgrade for 2006-2013 Corvette ZR1, Z06, and Grand Sport models. This differential is built with robust components to handle high-performance driving. The package includes a media-blasted transmission case, a seal and gasket kit, and heavy-duty 300M left and two-piece right stub shafts. Internally, the Stage III Differential is equipped with upgraded carbon clutch packs for enhanced performance and HD preload springs to ensure optimal operation. It also features a C6 Z06 specific pinion support and performance metal micropolished ring and pinion gears. Customers can select from available C6 Z06/ZR1 gear ratios, including 3.42, 3.90, and 4.11. Please note that build times for these differentials can be several weeks. The product is intended for racing and performance applications only and may not be legal for use on public highways. Users should consult the manufacturer's warranty information for details, as many performance parts come with no warranty due to the stresses of racing and potential installation errors.

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

BrandRPM Transmissions
Part NumberRPM-C6Z-D3
CategoryDrivetrain
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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