View our Specials! Coupon Code: SaveIn2026
Looking for aftermarket parts to modify or upgrade your Pontiac GTO with differentials? At Tunersports.com we carry a huge selection of the top name brand performance differential parts and accessories.
 IN STOCK - DROPSHIPS YC GM12P-DG-4This bare Dura Grip case features high-strength nodular iron construction and precision machining. It's ready to accept spider gears, clutches, and springs.... Yukon Gear Dura Grip For GM 12 Bolt Cars w/ 33 Spline Axles 1970-1971 Pontiac GTO The Judge 1970-1972 Pontiac GTO Base $436.89 |
 IN STOCK - LOW YDGGM12P-3-30-1Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a h... Yukon Gear Dura Grip Positraction For GM 12 Bolt Car w/ 30 Spline Axles / 3.08 To 3.90 Ratio 1970-1971 Pontiac GTO The Judge 1970-1972 Pontiac GTO Base $904.89 |
 OUT OF STOCK YDGGM12P-3-33-1Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a h... Yukon Gear Dura Grip Positraction For GM 12 Bolt Car w/ 33 Spline Axles / 3.08 To 3.90 Ratio 1970-1971 Pontiac GTO The Judge 1970-1972 Pontiac GTO Base $970.89 |
 IN STOCK - LOW YDGGM12P-4-30-1Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a h... Yukon Gear Dura Grip Positraction For GM 12 Bolt Car w/ 30 Spline Axles / 4.10+ 1970-1971 Pontiac GTO The Judge 1970-1972 Pontiac GTO Base $934.89 |
 IN STOCK - DROPSHIPS YDGGM12P-4-33-1Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a h... Yukon Gear Dura Grip Positraction For GM 12 Bolt Car w/ 33 Spline Axles / 4.10+ 1970-1971 Pontiac GTO The Judge 1970-1972 Pontiac GTO Base $952.89 |
 IN STOCK - DROPSHIPS YDGGM8.2BOP-3-28-1Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a h... Yukon Gear Duragrip Posi For 8.2in Buicks / Olds & Pontiac w/ 28 Spline Axles 1964-1972 Pontiac GTO Base 1970-1971 Pontiac GTO The Judge $1,029.89 |
 IN STOCK - LOW YDGGM8.5O-3-28Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a h... Yukon Gear Dura Grip Positraction For GM 8.5in w/ 28 Spline Axles 1965-1971 Pontiac GTO Base 1970-1971 Pontiac GTO The Judge $992.89 |
 OUT OF STOCK YGK2359Yukon Gear & Axle(R) provides the highest quality aftermarket drivetrain parts in the industry. Yukon products are produced using superior materials and built to tolerances that exceed OE specifications. We do drivetrain right! Yukon manufactures high performance ring and pinions, positractions, loc... Yukon 64-72 Pontiac GTO Limited Slip & Re-Gear Kit 8.2in BOP 27 Spline 3.36 ratio 1964-1972 Pontiac GTO Base 1970-1971 Pontiac GTO The Judge $1,385.89 |
 OUT OF STOCK YP MINSGM12-30Yukon mini spools provide the traction of a full spool at an economical cost.... Yukon Gear Mini Spool For GM 12 Bolt Car & Truck w/ 30 Spline Axles 1970-1971 Pontiac GTO The Judge 1970-1972 Pontiac GTO Base $277.89 |
 IN STOCK - DROPSHIPS SL GM12-30USA Standard Spartan Locker For GM 12 Bolt Car & Truck w/ 30 Spline Axles 1970-1971 Pontiac GTO The Judge 1970-1972 Pontiac GTO Base $734.89 |
 IN STOCK - DROPSHIPS SL XP-GM12USA Standard Spartan Locker 12 Bolt GM Spartan Locker Cross Pin 1970-1971 Pontiac GTO The Judge 1970-1972 Pontiac GTO Base $56.89 |