The OS Giken Super Lock LSD uses our patented pressure ring design that allows for smooth, progressive locking. This design is a spline-through-side-gear design that allows for fitment of more friction plates (up to 2x as many as competitors versions).

All components are chemically heat treated for maximum durability
All components are constructed from a high-grade steel alloy
Gears are raw-forged for maximum strength
Clutch disks are precision-machined simultaneously on both sides to extremely tight tolerances resulting in minimal warpage.
LSD case is machined from a single billet piece to ensure uniformity.
The OS LSD standard spec allows for low preload while still retaining a fully progressive 100% lock capability. Operation is quiet and the progressive locking allows for smooth predictable locking. When replacing an open diff, equipping an OS LSD will completely improve the driving experience while maintaining everyday drivability.
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Features:
- Fits all 2015-newer S550 Mustangs
- Upgrade for BMR's BK051 and BK054, as well as other diff inserts and lockouts on the market
- Grade 12.9 hardware for the ultimate in strength
- Designed for street performance, drag race, and road race applications
- Durable zinc finish
- 3-4 hour installation time
- Proudly designed in the U.S.A.
- Proudly made in the U.S.A.
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Loaded differential housing for Mustang IRS Fits 2018-2019 Mustang Fits 2015-2017 Mustang (see technical notes below) Iron housing with aluminum cover Includes 3.55:1 ratio gear set M-4209-88355A and Traction-Lok differential M-4204-M Custom calibration required for speedometer and shift corrections Original Equipment on 2019 Mustang GT Note-on 2015-2017 Mustang, pinion flange change may be necessary; comes with pinion flange with 93mm bolt circle and 110mm driveshaft pilot installed. For applications that require 95mm bolt circle and 113mm driveshaft pilot, use FR3Z-4851-B pinion flange, available through Ford dealer Learn More

***THE MANUFACTURE ONLY RECOMMENDS THE FOLLOWING AFTERMARKET DIFFERENTIAL FLUID:

75W90 Motul Gear 300 (100118)
75W140 Motul Gear Competition (101161)

**THE WAVETRAC IS THE ONLY TORSIONAL DIFFERENTIAL MANUFACTURED THAT WORKS IN NO OR NEAR NO-LOAD CONDITIONS!

Product Description
THE WAVETRAC® AT A GLANCE:

• Innovative:Patented Wavetrac® design automatically improves grip in low traction conditions. This feature is truly innovative and unlike any other torque biasing diff design.

• Superior Materials:9310 steel gears run in case-hardened billet steel bodies. ARP® fasteners used throughout.

• Maintenance Free:As supplied new, the Wavetrac® differential will perform a lifetime of service without maintenance or rebuilds.

• Limited LIFETIME Warranty:All Wavetrac® differentials include a transferable, Limited Lifetime Warranty.

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MFactory Honda B16A Helical Limited Slip Differential by MFactory - MF-TRS-05B16

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!

2nd Generation Design:

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

Please Note

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!

2nd Generation Design:

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

Please Note

Honda B16A Engines
1999 - 2000 Honda Civic Si*
1994 - 1997 Honda Civic Del Sol*
*See Fitment Notes about B16A2 Engines
Honda B16A Engines
1999 - 2000 Honda Civic Si*
1994 - 1997 Honda Civic Del Sol*
*See Fitment Notes about B16A2 Engines

Learn More

MFactory Honda B16A Helical Limited Slip Differential by MFactory - MF-TRS-05B16

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!

2nd Generation Design:

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

Please Note

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!

2nd Generation Design:

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

Please Note

Honda B16A Engines
1999 - 2000 Honda Civic Si*
1994 - 1997 Honda Civic Del Sol*
*See Fitment Notes about B16A2 Engines
Honda B16A Engines
1999 - 2000 Honda Civic Si*
1994 - 1997 Honda Civic Del Sol*
*See Fitment Notes about B16A2 Engines

Learn More