Driveshaft Shop - 1200HP Rear Axle Bar / CV Internal *Upgrade Only* || F80/F82/F83

Island Racewerks Rear Axle Bar & Inner CV Upgrade – BMW F82 M4 (2014+)

Rated for 1200HP – Aerospace-Grade CV Internals – Built by DSS

Upgrade your F82 M4’s drivetrain with confidence using the Rear Axle Bar and Inner CV Upgrade from Island Racewerks. Designed in collaboration with Driveshaft Shop (DSS), this axle set is engineered to handle the abuse of high-horsepower builds with unmatched reliability.

This upgrade replaces the factory 28-spline axle bars with 36-spline aircraft-grade bars, along with 108mm Chromoly inner CV joints and aerospace-grade internals in both the inner and outer CVs. These enhancements deliver significantly improved torque capacity and long-term durability for aggressive street or track use.

✅ Key Features:

• 36-Spline Aircraft-Grade Axle Bars (OEM: 28 spline)

• 108mm Chromoly Inner CV Joints – Aerospace-Grade Cage & Race

• Upgraded Aerospace-Grade Outer CV Internals (OEM housings reused)

• Tempered & Shot-Peened CV Housings for maximum strength

• Factory-Style Metal CV Covers – Double O-Ring Sealed

• Rated to 1200HP – Ideal for high-boost or race builds

• 1-Year Limited Warranty

📦 What’s Included:

• (2) 36-Spline Aircraft-Grade Axle Bars

• (2) Aerospace-Grade 108mm Chromoly Inner CVs

• (2) OEM Outer CV Housings – Rebuilt with Aerospace Internals

• Fully assembled axles (upon receiving your OEM cores)

🔧 Core Exchange Required:

This product requires your OEM F82 M4 rear axles to be sent in for disassembly and rebuilding.
👉 Call us first for lead times and to obtain your RMA number before shipping.

⚠️ Please Note:

• OEM axle cores required

• Lead times vary – Call ahead

• Built in partnership with Driveshaft Shop (DSS)

• Island Racewerks is not the manufacturer – We provide logistics, service, and support

• Verify fitment before ordering – We are not liable for incorrect purchases

🛠️ Vehicle Fitment:

• BMW F82 M4 (2014+)

Whether you're running a big turbo setup or simply want bulletproof drivetrain reliability, this upgrade is built to deliver. Take your M4’s performance to the next level with one of the most trusted axle solutions in the industry.

Contact us now to reserve your RMA and get started.