RPM Transmissions

Stage III Differential

$3,795.00

SKU: RPM-C6Z-D3

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

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandRPM Transmissions
Part NumberRPM-C6Z-D3
CategoryDrivetrain

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy