Driveshaft Shop - Rear Axle Bar / Internal *Upgrade Only* || F10-F13 M5/M6

Island Racewerks Rear Axle Bar & Inner CV Upgrade – BMW F10 M5 (2012–2016)

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

Maximize the durability and performance of your F10 M5 drivetrain with the Island Racewerks Rear Axle Bar and Inner CV Upgrade. Designed for high-horsepower street or track builds, this axle upgrade uses 36-spline aircraft-grade bars, Chromoly 108mm CV joints, and aerospace-grade internals to create a nearly indestructible axle assembly capable of handling up to 1200HP.

Unlike factory 28-spline bars, these upgraded 36-spline units deliver superior torque capacity and long-term reliability. We temper and shot-peen the OEM CV housings, then fully rebuild them using upgraded cage and race components, all sealed with factory-style metal CV covers and double O-ring seals.

✅ Key Features:

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

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

• Rebuilt OEM Outer CV Housings with Aerospace-Grade Internals

• Tempered & Shot-Peened OEM Housings for maximum strength

• Factory-Style Outer CV Covers – Double O-ring Sealed

• Rated for 1200HP – Ideal for Big Power Applications

• 1-Year Limited Warranty

📦 What’s Included:

• (2) High-Strength 36-Spline Axle Bars

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

• (2) Rebuilt Outer CV Housings (OEM housings required)

• Fully assembled axle set – ready to install (OEM cores required)

🔧 Core Exchange Required:

You must send in your OEM F10 M5 rear axles for this service. Please call ahead for current lead times and to receive an RMA number before shipping your axles.

⚠️ Important Notes:

• OEM cores are required to complete this upgrade

• Lead times vary – Call for current turnaround

• Built in partnership with DSS (Driveshaft Shop)

• Island Racewerks does not manufacture this product – We handle the logistics and support on your behalf

• Confirm fitment before purchase – We are not responsible for incorrect orders

🛠️ Vehicle Fitment:

• BMW F10 M5 (2012–2016)

Built to support massive torque and aggressive driving, this is the ultimate axle upgrade for your F10 M5. Whether you’re chasing quarter-mile times or just want peace of mind at 1000+whp, this solution is engineered to take the abuse.

Contact us today to get started and secure your spot in the production queue.