LSD TECHNICAL TRAX ADVANCE 1.5WAY FORD MUSTANG S550/S650 Super 8.8" FA1

LSD TECHNICAL TRAX ADVANCE 1.5WAY FORD MUSTANG S550/S650 Super 8.8" FA1

$2,054.99 CAD

TOMEI SKU: TOMTC101B-FRFA1

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Description Availability

TC101B-FRFA1

engine FORD ECOBOOST, FORD 3.7 CYCLONE V6, FORD 5.0 COYOTE V8, FORD 5.2 VOODOO V8
model FORD S550 MUSTANG, FORD S650 MUSTANG
TYPE PCD DISC SPRING Size & No. of Ring Gear Bolts No. of Serration Teeth(T) Flange In Dia.(Φ) Initial Torque Pre Setting (kg.m) Super High Initial Pressure Ring Ring
Cam
Angle
(°)
Ext Dia. No. (In Dia.) No. (Ex Dia.) Thick-ness No. Ex Teeth No. In Teeth No. Teeth N/A No. Teeth N/A Strengthe-ning
FA2 160 106 8 8 1.7 2 0 0 N/A Φ12.7(10) 34T 37 9-11 ◯ 60ｘ60
FA1 40ｘ30

TYPE-FA

Main body dimensions.

Size of ring gear bolts Φ12.7
Number of ring gear bolts 10
Ring gear bolts PCD 160

 

Dimensions of the flanges left side slot

Number of Teeth 34Ｔ
Snap ring Without
Washer Without
Snap ring groove Without
The manufacturers
genuine parts side flange part number.		 -

 

Dimensions of the flanges Right side slot

Number of Teeth 34Ｔ
Snap ring Without
Washer Without
Snap ring groove Without
The manufacturers
genuine parts side flange part number.		 -

 


FA High Initial Torque SPEC.

[PLATE LOCATION FOR REBUILDS]

[EXAMPLE : INCREASING INITIAL TORQUE]

LOCATION TYPE NO. OF
DISCS		 INCREASED INITIAL TORQUE
NO. OF POATES		 STOCK INITIAL TORQUE
i.e. ICREASED TORQUE(kg・m)
② SPRING DISC
(OUTER TEETH)		 2 2 9.0-11.0
|
11.0-13.0
③ SPRING DISC
(INNER TEETH)		 - 2
④ FRICTION DISC
(OUTER TEETH)		 8 8
⑤ FRICTION DISC
(INNER TEETH)		 8 6


Click here to confirm model type compatiblity

Check the product for a stamped "TOMEI" & product "Type" on the case of the product,some older models do not have the type name on the case.

You can refer to this page to confirm the model when there is no type name stamped on the product.

Confirm the type name
from the shape of the differenttial case body.

If you are going to use the product on another vehicle,

you can use this as a reference to confirm compatibility.

Confirm the type name
from the shape of the flange side.


Precision Traction. Ultimate Stability.
Pure Mustang.


TYPE PART No. PRODUCT NAME  
2WAY TC101A-FRFA2 LSD TECHNICAL TRAX ADVANCE 2WAY
FORD MUSTANG S550/S650 Super 8.8″ FA2
INVENTORY→
1.5WAY TC101B-FRFA1 LSD TECHNICAL TRAX ADVANCE 1.5WAY
FORD MUSTANG S550/S650 Super 8.8″ FA1
INVENTORY→

APPLICATION

MAKER MODEL
YEAR		 MODEL ENGINE OEM DIFF TRANS-
MISSION
FORD 2015-
2023		 MUSTANG
S550		 2.3L ECO BOOST I4 3.31 Traction-Lok LSD
3.55 Traction-Lok LSD
3.73 Torsen LSD
(3.15 Traction-Lok LSD is not Compatible)		 MT/AT
3.7L Ti-VCT V6
5.0L Ti-VCT V8
5.2L Ti-VCT V8
2024+ MUSTANG
S650		 2.3L ECO BOOST I4 3.55 Traction-Lok LSD
3.73 Torsen LSD
(3.15 Traction-Lok LSD is not Compatible)
5.0L Ti-VCT V8
5.0L COYOTE V8

We are proud to announce the release of the TOMEI TECHNICAL TRAX L.S.D., developed specifically for the S550 Mustang (2015–2023) and S650 Mustang (2024+).

Whether you’re driving the EcoBoost 2.3L Turbo, the mighty 5.0L V8 GT, Mach 1, or the naturally aspirated 5.2L V8 GT350—this L.S.D. is built to deliver authentic performance for every S550/S650 owner seeking true rear-wheel-drive control.


Why L.S.D. for the S550/S650 Mustang?

The biggest leap forward in the 6th generation Mustang lies in its Independent Rear Suspension (IRS). To fully unlock the benefits of this configuration, precise rear wheels control is essential. Installing the Technical Trax L.S.D. transforms your Mustang with:

・Dramatically improved traction
・Sharper cornering performance
・Shorter lap times on track
・Enhanced straight-line stability for street use
・Greater control in drifting scenarios


Features of the TOMEI TECHNICAL TRAX L.S.D.

・Available in 1.5-WAY and 2-WAY configurations
・High initial torque design—ideal for high-powered Mustangs
・Compatible with OEM Torsen L.S.D., and clutch-type L.S.D. setups
・Designed to fit S550 and S650 grades—from EcoBoost to GT350


This is not just an upgraded L.S.D.

It’s a breakthrough in driving dynamics that turns your Mustang into a true rear-wheel-drive sports machine.

Experience the transformation. Feel the difference.

“For the True Driving Enthusiasts.”
Now available.No more compromises in your Mustang’s performance.


This is not just a upgraded L.S.D.

Black Colored Forged L.S.D. Case


HIGHEST INITIAL TORQUE SPRING DISCS IN THE INDUSTR

The ultra-compact spring discs were designed to increase clutch capacity in order to maintain high initial torque. The spring discs also have a variable spring rate construction in order to minimize warping and maximize longevity even after hard driving or extended use.

SPRING DISC

The ultra-compact spring discs were designed to increase clutch capacity while maintaining high initial torque.


VARIABLE RATE SPRING DISC

By utilizing a variable spring rate construction, the spring disc can withstand hard driving and extended use without warping.


HIGH PERFOEMANCE FRICTION DISCS FOR CONSISTENT POWER/TORQUE TRANSFER

The TOMEI L.S.D. utilizes 16 high quality friction disks to ensure that power and torque is transmitted to rear wheels in a smooth manner to allow for precise vehicle control and the ultimate driving experience.

The new and improved Tomei ADVANCE DISC allows for a quieter and more refined driving experience. Unlike other L.S.D.s, the Tomei L.S.D. is offers greater stability during throttle transitions. It eliminates loud clunking noises, making it a highly streetable yet aggressively tuned L.S.D.


1.5WAY / 2WAY

1.5 WAY

The 1.5 way L.S.D. locks up during during acceleration and unlocks during deacceleration. This allows for a more natural feeling under hard braking.

2 WAY

The 2 way L.S.D. locks up on both acceleration and deacceleration. This allows for more precise control of the car using the throttle, which is very beneficial for drifiting.


SPECIFICATION

TYPE FA1/FA2
PCD 160mm
Disc Diameter Φ106
Disc (IN Teeth) 8
Disc (EX Teeth) 8
Disc Thickness 1.7mm
Spring 2
No. & Size of Ring Gear Bolts Φ12.7 (10)
No. of Teeth 34T
Inner Flange Diameter Φ37
Initial Torque 9.0 – 11.0 kgf・m
Pressure Ring cam Angle FA1 : 40°x 30°
FA2 : 60°x 60°

GEAR OIL INCLUDED

The L.S.D. kit will come with 2 liters of GL-5 80w-90 TOMEI hypoid L.S.D. gear oil. This oil must be used in conjunction with the TOMEI Technical Trax L.S.D. unit. When using the TOMEI Technical Trax L.S.D. with another brand or grade gear oil, the L.S.D. may make a louder chattering sound and increase the wear of the L.S.D. which may result in a decreased life span of the L.S.D. Gear oil with higher viscosity and higher pressure type lubricants may also increase the chattering noise of the L.S.D.

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If a product needs to be ordered in the typical wait time is 1-2 weeks. This means the product is special ordered.

Shipping times vary depending if the part is in stock at our warehouse and which shipping option is chosen at checkout.

Please contact us for an accurate ETA and availability.