Gain a prominent advantage over the competition with the MFactory Helical Limited Slip Differential. Through the smooth and constant distribution of power to the wheels, the MFactory Helical LSD puts the power-to-the-ground and maximises your vehicle's traction. A must for any race car, be it Street, Strip or Track!

Diamond Cut to exacting tolerances from Forged High-Nickel-Chromium-Molybdenum Steel
Perfect fitment & finish ensures hassle-free installation & maintenance, each and every time

Designed using leading-edge Solidworks 3D CAD & Cosmos FEA software
Advanced Gear Geometry minimizes parasitic drivetrain losses. Race transmissions built with MFactory components transfer, on average, 1-2% more power to the ground over our competitors!

Multiple Stages Available (Honda & Mazda)
Users can choose (and upgrade) between the various Stages available, which determine the Bias Ratios. With the MFactory Helical LSD, upto 75% torque can be transferred to the one wheel! A must-have for serious road-racers

2nd Generation Design
The MFactory v2 Helical LSD is lighter, stronger and more efficient than any other Torque-Biasing Differential on the market today!

Covered by the MFactory Lifetime, Globally Transferable Warranty
Whether used on the Street, Strip or Track, all MFactory Helical LSD's come with a Lifetime, No-Hassle, Globally Transferable Warranty

No-Load/One-Wheel Syndrome
A common misconception is that a Torsen-Style Differential is useless under a no-load situation (e.g One wheel in the air). Although true to an extent, this no-load situation does not apply to the modern day car with Traction Control (or eDiff). For those without traction control, there is a very commonly used solution to the problem (used by professional race car drivers over the past 30+ years) that our competitors will not tell you; simply left-foot brake

Specifications

Made from imported Japanese SAE 4320 & SAE 9310 Steel
Forged, Double Tempered and Super Sub-Zero treated for unsurpassed toughness
Advanced Shot Peening technology increases surface hardness
Designed to withstand the extreme shock loads of competition-level Drag Racing
Advanced gear geometry designed using industry-leading software puts more power to the ground
Only the highest quality Brighton-Best Hardware is used
Maintenance-free Gears eliminates the need for special fluids & rebuilds associated with plate-type LSDs
Lock-free operation ensures no adverse affect to steering response
Optional Race Pack Upgrades for more aggressive cornering (Honda & Mazda Fitments Only)

Fitment Notes

Honda B16A2 Fitments: Will not directly fit models previously equipped with an OEM Viscous LSD, and will require a Ring Gear change

Honda B16A/B18C/K20A Stage 2: These are specifically designed to be used with the DSS Pro Level 28 Spline Axles. They will NOT work with oem axles

BMW 135i MT/335i 07+ MT/DCT/335d Fitments: Will not directly fit these models due to the oem Ring Gear being welded onto the differential. The Ring Gear will either need to be machined to accept the new LSD, or a new bolted Ring & Pinion used. MFactory Competition Products is one of only 3 companies in the US that can provide this service that meets oem tolerances, and the only US company to manufacture precision aftermarket performance Ring & Pinions (Final Drive Gears) for the BMW