Currie complete Ford 9-inch third members, make it easy to update your muscle car, sport truck, street rod, or race vehicle with a new gear ratio or carrier. Every Currie Ford 9-inch third member includes: a new nodular iron...
Yukon Dura Grip Positraction 8.2" 28 Spline 3.08 And Up Ratios
Yukon Dura Grip® Positraction unit is based on the race-proven four-spring clutch-style design that has been used by GM for years. Assembled with heavy-duty 4320 Chrome-Moly spider gears and composite clutches for reduced...
Yukon Dura Grip Positraction 8.5" 30 Spline 3.08-3.90 Ratios
Yukon Dura Grip® Positraction unit is based on the race-proven four-spring clutch-style design that has been used by GM for years. Assembled with heavy-duty 4320 Chrome-Moly spider gears and composite clutches for reduced...
Grip-N-Loc, Auburn Gear's most advanced limited slip differential. The Grip-N-Loc builds upon exclusive technologies previously found in Auburn's limited slip line, but is even more robust to satisfy the extreme demands of...
The Powertrax Grip LS, is a clutch type differential in a forged steel case. This differential uses a set of carbon clutch discs to provide traction as needed, is rebuild-able and serviceable, and aimed squarely at the street...
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in traction-adding differential technology. It combines the automatic street-friendly operation of a limited-slip differential...

Powertrax; No-Slip Traction Systems; Buick/Olds/Pontiac; 10 Bolt Differential; 8.2" Ring Gear; 28 Spline Axle
Classic $634.99 ea
Grip-N-Loc, Auburn Gear's most advanced limited slip differential. The Grip-N-Loc builds upon exclusive technologies previously found in Auburn's limited slip line, but is even more robust to satisfy the extreme demands of...

1964-71 Buick, Oldsmobile, Pontiac 8.2" 10-Bolt; Auburn Gear Grip-N-Loc Differential; 28 Spline; 2.93-3.23 Ratios
Classic $604.99 ea
1976-88 GM 7-1/2"& 7-5/8" 10-Bolt; Auburn Gear Grip-N-Loc Differential; 26 Spline; 3.23/Up
Grip-N-Loc, Auburn Gear's most advanced limited slip differential. The Grip-N-Loc builds upon exclusive technologies previously found in Auburn's limited slip line, but is even more robust to satisfy the extreme demands of...

1976-88 GM 7-1/2"& 7-5/8" 10-Bolt; Auburn Gear Grip-N-Loc Differential; 26 Spline; 3.23/Up
Classic $599.99 ea
Grip-N-Loc, Auburn Gear's most advanced limited slip differential. The Grip-N-Loc builds upon exclusive technologies previously found in Auburn's limited slip line, but is even more robust to satisfy the extreme demands of...
If you're looking for extreme traction, Classic Industries® has got it all locked up! This new positive-locking differential is a breakthrough in differential technology, delivering the most traction possible while still...

Powertrax; Lock-Right Locker; 10 Bolt Positive-Locking Differential; 7.6" Ring Gear; 26 Spline Axle; Open Case
Classic $509.99 ea
If you're looking for extreme traction, Classic Industries® has got it all locked up! This new positive-locking differential is a breakthrough in differential technology, delivering the most traction possible while still...

Powertrax; Lock-Right Locker; 10 Bolt Positive-Locking Differential; 7.5" Ring Gear; 26 Spline Axle; Open Case
Classic $501.99 ea
Grip-N-Loc, Auburn Gear's most advanced limited slip differential. The Grip-N-Loc builds upon exclusive technologies previously found in Auburn's limited slip line, but is even more robust to satisfy the extreme demands of...

1964-71 Buick, Oldsmobile, Pontiac 8.2" 10-Bolt; Auburn Gear Grip-N-Loc Differential; 28 Spline; 3.36:1 & Up
Classic $449.99 ea
If you're looking for extreme traction, Classic Industries® has got it all locked up! This new positive-locking differential is a breakthrough in differential technology, delivering the most traction possible while still...

Powertrax; Lock-Right Locker; 10 Bolt Positive-Locking Differential; 7.6" Ring Gear; 28 Spline Axle; Open Case
Classic $429.99 ea
Yukon Dura Grip Positraction 8.5" 28 Spline 2.76 And Up Ratios
Yukon Dura Grip® Positraction unit is based on the race-proven four-spring clutch-style design that has been used by GM for years. Assembled with heavy-duty 4320 Chrome-Moly spider gears and composite clutches for reduced...
Grip-N-Loc, Auburn Gear's most advanced limited slip differential. The Grip-N-Loc builds upon exclusive technologies previously found in Auburn's limited slip line, but is even more robust to satisfy the extreme demands of...
Grip-N-Loc, Auburn Gear's most advanced limited slip differential. The Grip-N-Loc builds upon exclusive technologies previously found in Auburn's limited slip line, but is even more robust to satisfy the extreme demands of...
The Powertrax Grip LS, is a clutch type differential in a forged steel case. This differential uses a set of carbon clutch discs to provide traction as needed, is rebuild-able and serviceable, and aimed squarely at the street...
1964-72 Chevrolet 8.2" 10-Bolt; Auburn Gear Grip-N-Loc Differential; 28 Spline; 3.08 & Up
Grip-N-Loc, Auburn Gear's most advanced limited slip differential. The Grip-N-Loc builds upon exclusive technologies previously found in Auburn's limited slip line, but is even more robust to satisfy the extreme demands of...

1964-72 Chevrolet 8.2" 10-Bolt; Auburn Gear Grip-N-Loc Differential; 28 Spline; 3.08 & Up
Classic $449.99 ea
If you're looking for extreme traction, Classic Industries® has got it all locked up! This new positive-locking differential is a breakthrough in differential technology, delivering the most traction possible while still...

Powertrax; Lock-Right Locker; 12 Bolt Positive-Locking Differential; 8.875" Ring Gear; 30 Spline Axle; Open Case
Classic $392.99 ea
If you're looking for extreme traction, Classic Industries® has got it all locked up! This new positive-locking differential is a breakthrough in differential technology, delivering the most traction possible while still...

Powertrax; Lock-Right Locker; 10 Bolt Positive-Locking Differential; 8.5" Ring Gear; 28 Spline Axle; Open Case
Classic $352.99 ea