Unlock an edge over the competition with the MFactory Helical Limited Slip Differential LSD, engineered to deliver smooth and consistent power distribution to the wheels. The MFactory Helical LSD maximizes traction, putting the power where it matters—on the ground. Ideal for any racing environment, whether it’s street, strip, or track racing, this differential is a must-have upgrade for enthusiasts and professionals alike.

Precision Diamond-Cut for Unmatched Strength
Each MFactory Helical LSD is diamond-cut to exact tolerances from Forged High-Nickel-Chromium-Molybdenum Steel, a durable alloy known for its strength and resistance to wear under intense conditions. This precision-cut design ensures a perfect fit and smooth installation, minimizing maintenance concerns.

Engineered with Cutting-Edge Design Tools
Developed using industry-leading Solidworks 3D CAD and Cosmos FEA software, the MFactory LSD leverages advanced gear geometry to reduce parasitic drivetrain losses. With MFactory components, race transmissions achieve 1-2% more power to the wheels compared to competitors, delivering a performance boost for serious racers.

Available in Multiple Stages for Honda & Mazda
Choose from various stages that set the Bias Ratios to suit your vehicle’s needs. This flexibility allows up to 75% of torque transfer to a single wheel, offering an optimal solution for high-performance racing. Plus, stages can be upgraded as your driving demands evolve, providing continuous improvement potential.

2nd Generation Design: Lighter, Stronger, More Efficient
The latest generation MFactory v2 Helical LSD is engineered for peak efficiency, with a lighter, stronger structure that outperforms other torque-biasing differentials. It’s specifically crafted to reduce weight without compromising strength, ensuring quicker acceleration and sharper handling.

Backed by a Lifetime, Globally Transferable Warranty
Every MFactory Helical LSD comes with a Lifetime, No-Hassle, Globally Transferable Warranty. Whether on the street, strip, or track, you can rely on this differential's durability and coverage, which stays with the product even if ownership changes.

No-Load/One-Wheel Syndrome Solution
While Torsen-style differentials are often thought to struggle under “no-load” conditions e.g., when one wheel is in the air, this is mitigated in modern vehicles with traction control or electronic differential eDiff. For those without these aids, a proven technique used by race professionals is simple: left-foot braking to maintain traction, a technique MFactory confidently supports.

Upgrade to the MFactory Helical LSD and experience better handling, increased traction, and an unparalleled warranty. Designed for performance, this differential is your gateway to a more controlled, powerful drive.

Construction

• Enhanced Performance and Traction: The MFactory Helical Limited Slip Differential LSD is crafted to give you a competitive edge by delivering smooth, uninterrupted power distribution to both wheels. This power distribution increases traction, allowing your vehicle to grip the road more effectively—especially crucial for high-performance street, strip, or track racing.
• Precision Engineering with High-Durability Alloy: Each MFactory Helical LSD is diamond-cut from Forged High-Nickel-Chromium-Molybdenum Steel, a specialized alloy that excels in strength and wear resistance. Diamond cutting ensures extremely tight tolerances, so you can count on perfect fitment and long-lasting durability. This process also minimizes the need for frequent adjustments, giving you a maintenance-free experience.
• Optimized with Advanced CAD Technology: Designed with cutting-edge Solidworks 3D CAD and Cosmos FEA Finite Element Analysis software, this LSD utilizes advanced gear geometry to reduce "parasitic losses" in the drivetrain. Parasitic losses occur when some of the engine’s power is lost before reaching the wheels. With MFactory’s gear design, you can expect up to 1-2% more power transferred to the ground compared to other brands—a significant gain in racing performance.
• Customizable Stages for Honda & Mazda Models: The MFactory Helical LSD offers multiple stages, each tailored to different Bias Ratios. Bias Ratio defines how much torque can be shifted between the wheels, with this model offering ratios capable of transferring up to 75% torque to a single wheel. This flexibility is ideal for racers looking to maximize torque on demand, and it provides the option to upgrade as your needs change over time.
• Lightweight, High-Strength 2nd Generation Design: The latest MFactory v2 Helical LSD has been upgraded to be both lighter and stronger than previous models, reducing weight without compromising durability. A lighter differential allows faster vehicle acceleration and sharper handling, while increased strength ensures it withstands the demands of high-torque applications without faltering.
• Lifetime, Globally Transferable Warranty: All MFactory Helical LSD units come with a Lifetime, No-Hassle, Globally Transferable Warranty. This means you’re covered, no matter where or how you drive, and the warranty remains valid even if you transfer ownership of the differential. It’s peace of mind for both current and future owners.
• Solution for No-Load/One-Wheel Syndrome: Many Torsen-style differentials can experience “no-load” issues when one wheel has no traction, such as when one wheel is in the air. However, this is less of a concern in modern vehicles equipped with traction control or eDiff systems, which electronically manage power distribution. For vehicles without these systems, a simple solution—used by professional racers for decades—is left-foot braking. This technique helps apply balanced force across both wheels, maintaining traction even in challenging conditions.
• Elevate Your Drive with the MFactory Helical LSD: By upgrading to the MFactory Helical LSD, experience not only enhanced handling and traction but also the confidence of a robust, high-quality component backed by a lifetime warranty. This differential is engineered to bring out the best in your car, whether you’re racing or simply seeking improved control on the road.

Specifications

Vehicle Fitment

• Honda Civic/Integra K-Series
• Honda CR-Z CR-Z
• Honda Civic/Integra R18A

Warranty

MFactory Competition Products provides a limited lifetime warranty on all Helical LSDs, warranting them to be free of defects in materials and workmanship upon receipt of the product and professional installation. Parts returned must be determined by MFactory Competition Products to be defective before any warranty credit or replacement is issued.

MFactory Competition Products' warranty obligation is limited to repairing or replacing, at its discretion, any part proven defective. Customers must prepay transportation charges for returning products under warranty consideration.

The final determination of the suitability of the products for the intended use is solely the buyer's responsibility. MFactory Competition Products shall not be liable for any special, direct, indirect, incidental, or consequential damages, including claims for delay, loss of profits, or labor, that might arise from the failure of any part.

Note: MFactory Competition Products WILL NOT provide a warranty for parts used for Rally purposes.

MFactory Competition Products disclaims liability for any damage or injury to persons or property resulting from improper installation or misuse of any part covered by this warranty.

No other warranties, expressed or implied, extend beyond those explicitly set forth above.

Installation: Any warranty claims arising as a result of the failure of a Helical LSD will ONLY be entertained if the LSD was professionally installed and was NOT disassembled. Disassembling a Helical LSD will invalidate the warranty.

Recommended Bearings: When ordering your MFactory Helical LSD, we highly recommend that you order new Diff Bearings at the same time. All bearings supplied by us are high-quality OEM Japanese/German Bearings.