USA Standard Gear Ring & Pinion Gears, Axles, Driveshafts & More

USA Standard Gear uses precision machining and vigorous testing methods to produce a large assortment of world-class gearing and axle products, ranging from axle shafts...

USA Standard Gear uses precision machining and vigorous testing methods to produce a large assortment of world-class gearing and axle products, ranging from axle shafts to lockers. Summit Racing is your go-to source for USA Standard Gear parts. We carry USA Standard Spartan lockers, ring and pinion sets, axle shafts, replacement cross pins, front axle stubs, and more. Get the traction you need from the parts you want. Order your USA Standard Gear parts from Summit Racing today!

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USA Standard Gear Spartan Limited Slip 27 Spline Differential Dana 30 SL D30-4-27-LSD

Differential Carrier, Spartan Helical Gear Limited Slip, Dana 30, Front, 27 Spline, 3.73 and Up Ratio, Each

Part Number: SPZ-10383

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

USA Standard Gear Posi 31 Spline Differential Carriers GM 8.5 Inch, O axle ZP PGM8.5O-3-31

Differential Carrier, Limited Slip, 31-Spline Axle, Oldsmobile, 8.5 in., Each

Part Number: SPZ-59006

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Yukon Gear & Axle Dura Grip Positraction Carriers GM 8.5 Inch, O axle YDGGM8.5O-3-28

5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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USA Standard Gear Ring and Pinion Gear and Differential Combos for 1999-2016 F-350 SUPER DUTY - ZGK2179

Ring and Pinion Gears,USA Standard 11.25" Dana 80, 3.73 Ratio Rear Ring & Pinion GearInstall Kit 35 Spline Yukon Dura Grip Limited Slip Positraction,

Part Number: SPZ-10892

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2115

Ring and Pinion Gears,USA Standard 11.5" AAM, 3.73 Ratio Rear Ring & Pinion GearInstall Kit 30 Spline Yukon Dura Grip Limited Slip Positraction, with

Part Number: SPZ-10828

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2117

Ring and Pinion Gears,USA Standard 11.5" AAM, 4.56 Ratio Rear Ring & Pinion GearInstall Kit 30 Spline Yukon Dura Grip Limited Slip Positraction, with

Part Number: SPZ-10830

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 1994-2002 RAM 3500, RAM 2500, 1988-1997 F-350 - ZGK2165

Ring and Pinion Gears,USA Standard 11.25" Dana 80, 3.73 Ratio Rear Ring & Pinion GearInstall Kit 35 Spline Yukon Dura Grip Limited Slip Positraction,

Part Number: SPZ-10878

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2204

Ring and Pinion Gears,USA Standard 8.25" CHRYSLER, 3.07 Ratio Rear Ring & Pinion GearInstall Kit 29 Spline Yukon Dura Grip Limited Slip Positraction

Part Number: SPZ-10659

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2207

Ring and Pinion Gears,USA Standard 8.25" CHRYSLER, 3.90 Ratio Rear Ring & Pinion GearInstall Kit 29 Spline Yukon Dura Grip Limited Slip Positraction

Part Number: SPZ-10662

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 2011-2019 F-250 SUPER DUTY, F-350 SUPER DUTY - ZGK2153

Ring and Pinion Gears,USA Standard 10.5" Ford, 4.11 Ratio Rear Ring & Pinion GearInstall Kit 35 Spline Yukon Dura Grip Limited Slip Positraction,

Part Number: SPZ-10866

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2206

Ring and Pinion Gears,USA Standard 8.25" CHRYSLER, 3.73 Ratio Rear Ring & Pinion GearInstall Kit 29 Spline Yukon Dura Grip Limited Slip Positraction

Part Number: SPZ-10661

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2109

Ring and Pinion Gears,USA Standard 11.5" AAM, 3.73 Ratio Rear Ring & Pinion GearInstall Kit 30 Spline Yukon Dura Grip Limited Slip Positraction, with

Part Number: SPZ-10822

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2110

Ring and Pinion Gears,USA Standard 11.5" AAM, 4.11 Ratio Rear Ring & Pinion GearInstall Kit 30 Spline Yukon Dura Grip Limited Slip Positraction, with

Part Number: SPZ-10823

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2111

Ring and Pinion Gears,USA Standard 11.5" AAM, 4.56 Ratio Rear Ring & Pinion GearInstall Kit 30 Spline Yukon Dura Grip Limited Slip Positraction, with

Part Number: SPZ-10824

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 1999-2007 F-350 SUPER DUTY, F-250 SUPER DUTY, 2000-2005 EXCURSION - ZGK2142

Ring and Pinion Gears,USA Standard 10.5" Ford, 4.56 Ratio Rear Ring & Pinion GearInstall Kit 35 Spline Yukon Dura Grip Limited Slip Positraction,

Part Number: SPZ-10855

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 1994-2002 RAM 3500, RAM 2500, 1988-1997 F-350 - ZGK2170

Ring and Pinion Gears,USA Standard 11.25" Dana 80, 4.88 Ratio Rear Ring & Pinion GearInstall Kit Dura 35 Spline Grip Limited Slip Positraction,

Part Number: SPZ-10883

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2116

Ring and Pinion Gears,USA Standard 11.5" AAM, 4.11 Ratio Rear Ring & Pinion GearInstall Kit 30 Spline Yukon Dura Grip Limited Slip Positraction, with

Part Number: SPZ-10829

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 1994-2002 RAM 3500, RAM 2500, 1988-1997 F-350 - ZGK2164

Ring and Pinion Gears,USA Standard 11.25" Dana 80, 3.54 Ratio Rear Ring & Pinion GearInstall Kit 35 Spline Yukon Dura Grip Limited Slip Positraction,

Part Number: SPZ-10877

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 1999-2016 F-350 SUPER DUTY - ZGK2178

Ring and Pinion Gears,USA Standard 11.25" Dana 80, 3.54 Ratio Rear Ring & Pinion GearInstall Kit 35 Spline Yukon Dura Grip Limited Slip Positraction,

Part Number: SPZ-10891

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 1994-2002 RAM 3500, RAM 2500, 1988-1997 F-350 - ZGK2168

Ring and Pinion Gears,USA Standard 11.25" Dana 80, 4.30 Ratio Rear Ring & Pinion GearInstall Kit Dura 35 Spline Grip Limited Slip Positraction,

Part Number: SPZ-10881

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos ZGK2205

Ring and Pinion Gears,USA Standard 8.25" CHRYSLER, 3.55 Ratio Rear Ring & Pinion GearInstall Kit 29 Spline Yukon Dura Grip Limited Slip Positraction

Part Number: SPZ-10660

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 1994-2002 RAM 3500, RAM 2500, 1988-1997 F-350 - ZGK2169

Ring and Pinion Gears,USA Standard 11.25" Dana 80, 4.56 Ratio Rear Ring & Pinion GearInstall Kit Dura 35 Spline Grip Limited Slip Positraction,

Part Number: SPZ-10882

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 1999-2016 F-350 SUPER DUTY - ZGK2182

Ring and Pinion Gears,USA Standard 11.25" Dana 80, 4.30 Ratio Rear Ring & Pinion GearInstall Kit 35 Spline Yukon Dura Grip Limited Slip Positraction,

Part Number: SPZ-10895

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 1999-2016 F-350 SUPER DUTY - ZGK2183

Ring and Pinion Gears,USA Standard 11.25" Dana 80, 4.56 Ratio Rear Ring & Pinion GearInstall Kit 35 Spline Yukon Dura Grip Limited Slip Positraction,

Part Number: SPZ-10896

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 1999-2016 F-350 SUPER DUTY - ZGK2184

Ring and Pinion Gears,USA Standard 11.25" Dana 80, 4.88 Ratio Rear Ring & Pinion GearInstall Kit 35 Spline Yukon Dura Grip Limited Slip Positraction,

Part Number: SPZ-10897

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

USA Standard Gear Ring and Pinion Gear and Differential Combos for 1999-2007 F-350 SUPER DUTY, F-250 SUPER DUTY, 2000-2005 EXCURSION - ZGK2141

Ring and Pinion Gears,USA Standard 10.5" Ford, 4.30 Ratio Rear Ring & Pinion GearInstall Kit 35 Spline Yukon Dura Grip Limited Slip Positraction,

Part Number: SPZ-10854

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

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