1977-1982     E21     320 / 326

2022-Present     U11     sDrive18i / xDrive20i / xDrive28i / M35i

They are designed to replace BMW part #11247624615 and #11247586492 for the BMW N55B30 and S55B30 engines with a 144

and M54B30 engines

Driveshaft Shop Rear Axle Bar and Internal CV Upgrade, BMW E9X M3 gift 1977-1982 E21 320 / 326Upgrade your E90, E92, or E93 M3 with the Driveshaft Shop Rear Axle Bar and Internal CV Upgrade, designed for extreme durability and high horsepower applications. This service strengthens your factory axles by replacing key internal components with aerospace grade materials and high strength Chromoly upgrades, making them capable of handling up to 1200HP. What This Service Includes: Proprietary 1. 25" 300M axle bars for maximum strength (stock bars