RX8 Differential Swap Kit

RX8 Ford 8.8 Differential Swap

$2,945.00 – $5,846.00

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Our two-part differential conversion harnesses the 8.8 from the 1989-97 T-Bird and 1993-97 Mark VIII, or the 2003 Corba (31 spline), and is both weld and bolt in. Supplied with PnP axles with Porsche 930 inner CV, chrome-moly axle bars, and upgraded outer CVs. Available in 28 or 31 spline stub axles. Standard steel drive shaft for T56 with aluminum upgrade option.

  • Some rear covers may require trimming of the upper cooling fins to clear the subframe.
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Our two-part differential conversion harnesses the 8.8 from the 1989-97 T-Bird and 1993-97 Mark VIII, or the 2003 Corba (31 spline), and is both weld and bolt in. Supplied with PnP axles with Porsche 930 inner CV, chrome-moly axle bars, and upgraded outer CVs. Available in 28 or 31 spline stub axles. Standard steel drive shaft for T56 with aluminum upgrade option.

  • Some rear covers may require trimming of the upper cooling fins to clear the subframe.

Additional information

Weight 80 lbs
Dimensions 12 × 36 × 28 in

1 review for RX8 Ford 8.8 Differential Swap

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Q & A

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Can you tell me whether I have to buy the entire 8.8 rear end or just the differential and housing? Noah asked on March 14, 2025

Hi Noah - The 8.8 kit includes all required items for the install(axles, drive shaft, diff mount), minus the differential that is sourced by the customer.

Best regards,

 V8 Roadsters answered on March 18, 2025
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Can this kit work with the 2015 and newer 8.8 irs differentials? Dustin B. asked on November 19, 2023
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I’m only looking to get the diff plate and mounting plate and axels how do I go about that? Collin asked on July 22, 2022

Hi Collin - Please send us an email so we can confirm the exact items and provide a shipping quote for them. sales@v8roadsters.com

 V8 Roadsters answered on July 22, 2022
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I wanted to run a jdm rx8 transmission do you have a driveshaft to fit? Next I don't need a transmission could I buy the kit without a trans? Finally does the kit come with axles to fit the stock hub? Mason Helbig asked on March 4, 2022
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What is the hp rating on the stage 1 axles? Avra Luna asked on July 12, 2021

Hi Avra -Stage1 axles are rated at 500hp.

 V8 Roadsters answered on July 12, 2021
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