

RD6007
Transform your BMW E46 M3 or E92 M3—and other compatible M models—into a drift/drag weapon with the RacingDiffs Block Disc Pack. This kit converts your LSD into a permanently locked differential (100% lock) for maximum traction at launch and predictable, controllable slides—without welding.
Unlike welded diffs, Block Discs are reliable, reversible, and maintenance-free. Made from high-strength materials and backed by a Lifetime Warranty, they won’t crack under extreme load. When you want your LSD back, simply remove the discs and refit the clutch plates.
If you want to retain LSD behavior but need more grip, durability, and consistency for track or spirited street use, choose our Performance Pack (LSD Rebuild Kit).
Best for drivers who want faster corner exits and predictable handling—while staying within race or road regs that require a functioning LSD.
Compatible with the following BMW models using the GKN/M Motorsport carrier:
Note: An opening tool is required for installation on all models except E46 M3 (2000–2005). We offer the correct tool here: BMW GKN V2 LSD Opening Tool.
Built for the strip and the skidpad. Lock it in, launch harder, and hold angle with confidence—RacingDiffs has you covered.