Torsen 8.8" 31-Spline T-2R Differential
The Torsen is the ultimate performance differential. The Torsen's unique torque sensing ability keeps engine power going to the ground during changing traction conditions. The Torsen functions as an open differential as long as the amount of torque transmitted to each rear wheel remains equal. When one tire begins to lose traction, the Torsen instantly senses the change in torque being applied to the ground. The torque that is available from the tire that is beginning to lose traction is multiplied by the Torsen differential, and is then sent to the tire with better traction.
The multiplication of torque sent to the tire with better traction represents the "locking effect" of the differential. Called the Torque Bias Ratio (TBR), that multiplication ratio indicates how much more torque can be sent to the tire with more available traction, than is used by the tire with less traction.
The 4:1 TBR of the Torsen T-2R means that this differential is capable of delivering up to four times as much torque to the tire with better traction than is delivered to the tire with the least available traction. By comparison, the Torsen T-2R can deliver about 2.5 times as much torque to both rear tires, collectively, as an open differential can, given the same conditions.
During braking there is little or no torque being conveyed to the differential, and so there is little or no torque difference between the two rear tires. Therefore, the Torsen differential will not support any appreciable torque "wind-up" between the two rear tires during braking. Therefore, the Torsen does not interfere with the functioning of anti-lock brake systems.
Because there are no clutch plates to wear out, as with the stock Traction-Lock differential, axle endplay does not increase over time. This makes the Torsen differential ideal for use with fixed-mount brake calipers. The Torsen differentials fit Mustang 8.8" rear-ends, both solid axle and IRS, and are available in 28 spline and 31 spline versions.
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