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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Results 1 - 25 of 2000 +

USA Standard Gear Transfer Case Bearing Kits ZTBK208

Transfer Case Rebuild Kit, Bearing Kit, New Process 208, Chevrolet, Plymouth, Jeep, Dodge, Ford, GMC, Kit

Part Number: SPZ-77915

3.86 out of 5 stars ( 7 )

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Master Overhaul Kits ZK GM8.6

Ring and Pinion Installation Kit, GM 8.6 in., Rear, Kit

Part Number: SPZ-37059

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Transfer Case Bearing Kits ZTBK205GDM

Transfer Case Rebuild Kit, New Process 205, GM/Dodge Direct Mount, Kit

Part Number: SPZ-78653

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Transfer Case Bearing Kits ZTBK300A

Bearing Kit, Transfer Case, Dana 300, Jeep, Kit

Part Number: SPZ-75160

3.86 out of 5 stars ( 7 )

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Ring and Pinion Sets ZG F8.8-430 Ford 8.8 in. 4.30 Gears

RING AND PINION GEARS, USA Standard ring & pinion sets

Part Number: SPZ-36329

Not Yet Reviewed

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Ring and Pinion Sets ZG GM8.5-373 GM 8.5/8.6 in. 3.73 Gears

Ring and Pinion Gear, 3.73:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36214

4.5 out of 5 stars ( 6 )

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Manual Transmission Bearing Kits ZMBK116WS

Transmission Bearing and Seal, Muncie-4 Transmission Bearing/Seal Kit w/Synchro Rings Buick/Chevy/Oldsmobile/Pontiac/Bizzarrini Cars

Part Number: SPZ-72143

Not Yet Reviewed

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Axle Shafts ZA G8.2BOP-L

Axle Shaft, 28-spline, 29.875 in. Length, Rear, GM 8.2 in., BOP Axle, Pontiac, Each

Part Number: SPZ-35060

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Master Overhaul Kits ZK D60-R

Ring and Pinion Gear Installation Kits, Master Overhaul Kits, 29-spline, Dana 60, Rear, Chevrolet, Dodge, Ford, GMC, Jeep, Plymouth, Kit

Part Number: SPZ-37021

Not Yet Reviewed

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Master Overhaul Kits ZK D60-F

USA Standard Master Overhaul kit Dana 60, Front, Kit

Part Number: SPZ-37020

Not Yet Reviewed

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Ring and Pinion Sets ZG C8.42-355-C Chrysler 8.75 in. 742 case 3.55 Gears

Gear, Ring and Pinion, 3.55:1, Chrysler, 8.75 in. 742, Set

Part Number: SPZ-36300

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Ring and Pinion Sets ZG C8.89-355 Chrysler 8.75 in. 489 case 3.55 Gears

Ring and Pinion Gears, 3.55:1 Ratio, 29-spline, Standard Ring Gear Rotation, Chrysler 8.75 in., 489 Case, Set

Part Number: SPZ-36014

Not Yet Reviewed

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Transfer Case Bearing Kits ZTBK203G

Transfer Case Rebuild Kit, Bearing Kit, New Process 203, GM/Dodge, Kit

Part Number: SPZ-76163

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Spider Gear Sets ZIKGM12-S-30

Differential Carrier Rebuild Kits and Spider Gears, Spider Gear Sets, GM 8.875 in. (12-bolt), Car/Truck, 30-spline, Buick, Chevy, GMC, Pontiac, Kit

Part Number: SPZ-39021

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Ring and Pinion Sets ZG GM8.5-411 GM 8.5/8.6 in. 4.11 Gears

Ring and Pinion Gear, 4.11:1 Ratio, GM, 8.5 in./8.6 in., Rear, Set

Part Number: SPZ-36216

Not Yet Reviewed

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Master Overhaul Kits ZK C9.25-R-B

USA Standard Master Overhaul kit Chrysler, Dodge, 9.25 in., Rear, Kit

Part Number: SPZ-37079

3.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Ring and Pinion Sets ZG D80-373 Dana 80 3.73 Gears

Ring and Pinion Gears, 3.73:1 Ratio, 37-spline, Standard Ring Gear Rotation, Dana 80, Set

Part Number: SPZ-36092

Not Yet Reviewed

Estimated Ship Date: Monday 6/9/2025

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Estimated Ship Date: Monday 6/9/2025

USA Standard Gear Ring and Pinion Gear Kit Packages ZGK2007 GM 8.5 in. 3.73 Gears

Ring and Pinion Gears,USA Standard 8.5" GM, 3.73 Ratio Rear Ring & Pinion GearInstall Kit Axle Bearings & Seals. Fits 1.781" Carrier Bearing Journal

Part Number: SPZ-10718

Not Yet Reviewed

Estimated Ship Date: Jun 25, 2025 if ordered today

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Estimated Ship Date: Jun 25, 2025 if ordered today

USA Standard Gear Master Overhaul Kits ZK D44

Ring and Pinion Gear Installation Kits, Master Overhaul Kits, 10-bolt, 31-spline, Standard Ring Gear Rotation, Dana 44, Front, Chevy, Dodge, Ford, Kit

Part Number: SPZ-37008

Not Yet Reviewed

Estimated Ship Date: Monday 6/9/2025