BMW M2, M3, M4, M5, M6 (F/G-Chassis) Block Disc Set – 100% Lock for Drifting & Drag Racing

For hardcore drifters and drag racers, nothing beats the instant power delivery of a 100% locked differential. The BMW M2, M3, M4, M5, and M6 (F/G-Chassis) come equipped with an electronically controlled LSD, which is impossible to weld due to its complex design. The RacingDiffs Block Disc Set is the ultimate solution to transform your electronic LSD into a fully locked, drift/drag-ready differential without permanent modifications.

If you're a track enthusiast looking to improve LSD performance while maintaining some mechanical slip control, check out our Evo-Hybrid LSD Upgrade Kit. However, if you need full lock with a welded-diff feel, this Block Disc Kit is your go-to upgrade.

Why Choose the Block Disc Set for Your BMW F/G-Chassis?

• 100% Lock – No Slip, No Delay – Designed for drift and drag applications, delivering full power to both wheels at all times
• The Only Alternative to Welding – The OEM LSD is impossible to weld, making this kit the only true solution for a fully locked setup
• Fully Reversible – Unlike welding, this kit is completely removable, allowing you to return to factory settings anytime
• Zero Maintenance & Bulletproof Reliability – No special servicing required, lifetime durability
• Optimized for Extreme Use – Ideal for high-horsepower builds, launch control, and clutch-kick drifting

Complete Installation Kit Included

The RacingDiffs Block Disc Set includes all necessary components for installation:
• Block discs
• Differential collar
• High-quality bearing

This ensures a hassle-free install with everything needed to lock your BMW LSD permanently for maximum performance and control.

For drifters & drag racers who demand nothing but total lock, this is the ultimate BMW LSD upgrade!