Helical LSD Differential

This makes it an essential upgrade for any race car, whether for street, strip, or track use. The manufacturing process includes advanced material processing, heat treatment, and finishing techniques. This involves multiple stages such as primary heat treatment (Normalization and Annealing), machining with multi-axis CNC equipment, secondary heat treatment (Case Hardening), double-tempering, surface grinding, and a final Super Sub-Zero Processing at -300°F for cryogenic hardening and enhanced toughness. The components also undergo Micro-Peening for a super-smooth surface. This specific unit is a fully rebuilt MFactory Helical LSD within a carrier (pumpkin), offered as Option 3 for welded installations. It includes a $500.00 refundable core charge, which is refunded upon return of your old pumpkin, provided it matches the ordered Gear Ratio. Options for just the LSD or LSD with Ring & Pinion are also available if you prefer to do the machine work or installation yourself. The MFactory Helical LSD is compatible with various BMW models including E8X 135i, E9X 335i, E60 535i, and others, with specific fitments depending on transmission type (MT/DCT/AT) and production date. For example, 335i models have different installation requirements based on whether they are [BOLTED] or [WELDED] and their transmission type and production date. It is designed for models requiring a 2.56, 2.81, 3.08, 3.15, 3.46, or 3.64 gear ratio, with specific ratios available for different BMW platforms.