OS Giken SuperLock LSD, BMW E34 M5

Upgrade the performance and drivability of your BMW E34 M5 with the OS Giken SuperLock Limited Slip Differential. Engineered for both street and track use, this LSD features OS Giken’s patented pressure ring and spline-through-side-gear design, allowing for nearly double the number of friction plates compared to standard LSDs. The result is smooth, progressive lock engagement with unmatched reliability.

Key Features:

• Patented pressure ring for consistent lock behavior
• Spline-through-side-gear allows increased friction plate capacity
• Quiet, progressive 100% lock-up with low preload
• All components chemically heat-treated for superior wear resistance
• High-grade forged steel construction ensures extreme strength
• Billet-machined case delivers precision and long-term durability
• Dual-sided precision-machined clutch discs minimize warping

Ideal for replacing your OEM open differential, the OS Giken LSD delivers improved traction, cornering stability, and control—without compromising daily drivability. Whether you're carving canyon roads or pushing your M5 on track, this LSD gives you predictable, high-performance handling.

Technical Specs:

• Ramp Angles: 25 / 35
• Lock Timing: 336
• Friction Plates: 20
• Preload: 10S

Applications:

• E34 535i
• E34 540i
• E34 M5 with S38B36
• E34 M5 with S38B38 produced before 06/1994

Note: Professional installation recommended. Always consult the OEM service manual.