High Performance Series is built tough with large spider gears, high friction clutches, and high performance springs, all in a unique one-piece cone differential housing.  It out performs conventional clutch-plate and helical design differentials. This unit works great for replacement upgrade over stock, high performance hot rods, and tow vehicles.

The PRO Series is a high bias design clutch design differential that provides a positive lock and even distribution of power to both wheels. Using a higher spring preloads, high bias friction clutches, larger gears, and a strong one-piece cone design housing, makes this an aggressive differential for the street, strip and off-road use.

Pro Series, CHEVY 10 BOLT, 3 Series, 3.70-down, 17 teeth, '55-'64

High Performance Series, CHEVY/GM 12 BOLT, 4.10:1 & up, 33-teeth, '64-'72

High Performance Series, CHEVY/GM 12 BOLT, 3.07-3.73:1, 30-teeth, '64-'72

High Performance Series, CHEVY 10 Bolt, 8.20" Chevy, 3.08-Up, 28 teeth, '64-'72

High Performance Series, CHEVY 10 Bolt, 8.5-8.6", 2.73-Up, 28 teeth, 64-72

High Performance Series, CHEVY 10 Bolt, 8.5-8.6", 2.73-Up, 30 teeth, 64-72

High Performance Series, Ford 7.5" 10 bolt, all ratios, 28 tooth, 1978-Present

High Performance Series, Ford 8.8" all ratios, 31 tooth, 1983 and up

Pro Series, CHEVY/GM Truck 12 BOLT, 3.73-up, 30-teeth, '64-'85.5

Pro Series, CHEVY/GM 12 BOLT, 3.07-3.73:1, 33-teeth, 65-72, P

Pro Series, FORD 9", All ratios, 31 teeth, 57-87

High Performance Series, CHEVY 10 Bolt, 7.5-7.6", 3.23-Up, 28 teeth, 88-Present

High Performance Series, CHEVY 10 Bolt, 7.5-7.6", 3.08 & downUp, 28 teeth, '88-Present

Pro Series, FORD 9", All ratios, 28 teeth, 57-87

Pro Series,CHEVY 10 BOLT, 7.5-7.6", 3.23-Up, 26 teeth, '76-'88

Pro Series,CHEVY 10 BOLT, 7.5-7.6", 3.08-down, 26 teeth, '76-'88

Pro Series,CHEVY 10 BOLT, 7.5-7.6", 3.23-Up, 28 teeth, 88-Present

Pro Series,CHEVY 10 BOLT, 7.5-7.6", 3.08-down, 28 teeth, 88-Present

Pro Series, GM 8.5" 10 bolt, 2.73-up, 28 tooth, '70-up large bearing

Pro Series, Mopar 8 3/4" all ratios, 30 tooth, 1957 to 1974

Pro Series,GM 8.5" 10 bolt, 2.73-up, 30 tooth, '70-up large bearing

Pro Series, FORD 8.8", All ratios, 31 teeth, 83-Present

High Performance Series, CHEVY 10 BOLT, 7.5-7.6", 3.23-Up, 26 teeth, 76-88

High Performance Series, CHEVY 10 BOLT, 7.5-7.6", 3.08 & down, 26 teeth, '76-'88

Pro Series, FORD 8", All ratios, 28 teeth, 60-79

Pro Series, B.O.P. 10 BOLT, 8.2", 3.36-Up, 27 teeth, 64-71

Pro Series, CHEVY 10 BOLT, 8.20" Chevy, 3.08-Up, 28 teeth, '64-'72

Pro Series, CHEVY 10 BOLT, Vette Chevy, 32.41-3.70, 17 teeth, '55-'64

High Performance Series, MOPAR 9-1/4", 2.71-Up, 31 teeth, 68-83

High Performance Series, MOPAR 8-3/4", 2.71-Up, 27 teeth, '68-'86

High Performance Series, MOPAR 8-3/4", 2.71-Up, 29 teeth, '97-Present

High Performance Series, Ford 8.8" 10 bolt, all ratios, 28 tooth, 1979 and up

Pro Series, FORD 8.8" 10 Bolt, All ratios, 28 teeth, '79-Present

Pro Series, Dana 44 (w/o C Clips), 10 Bolt, 3.92-up, 30-teeth, '71-up

Pro Series, Dana 44 (w/o C Clips), 10 Bolt, 3.73-down, 30-teeth, '71-up

Pro Series, Dana 44 (w/o C Clips), 10 Bolt, 3.92-up, 19-teeth, '70-prior

Pro Series, Dana 44 (w/o C Clips), 10 Bolt, 3.73-down, 19-teeth, '70-prior

High Performance Series, GM Truck, 14 bolt, 9.5" all ratios, 33 Teeth, 1981-Present

Pro Series, B.O.P. 10 BOLT, 8.2", 3.23-down, 27 teeth, '64-'71