For over 15 years

- High-quality components for a long-term durability

either 85mm or 85

Email-based technical support

OS Giken SuperLock LSD, BMW E39 M5 4275 For over 15 yearsOS Giken SuperLock LSD for BMW E39 M5 Track Ready Limited Slip Differential with Street Comfort Upgrade the rear differential of your BMW E39 M5 with the OS Giken SuperLock LSDdesigned for smooth, progressive engagement and uncompromising traction. This performance differential features OS Gikens exclusive pressure ring technology and a spline through side gear construction that accommodates up to twice as many friction plates as conventional LSDs.