| USA STANDARD GEAR USA21807 Specifications |
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| Kit Contents | Includes Yukon Vacuum Disconnect Block-Off Kit, Two 27 Spline, 6.11" Outer Axles, 30 Spline, 16.60" Inner axle, Yukon Super Joints, 30 Spline, 32.28" Inner axle, 3.73-and-up gear ratio Yukon Zip Locker | | Material | Heavy Duty 4340 Chromoly |
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| 4340 Chromoly Axle And Zip Locker Kit |
USA Standard Gear uses precision manufacturing technologies to provide top quality, competition tough axles.
Features
- Heat Treated to ensure added strength and durability in the bearing and seal area
- Made from the best steel available to provide maximum strength and a long life
- Engineered to match fit, form, and function of the OE part
Steel Properties
| SAE Grade | Tensile Strength (psi) | Yield Strength (psi) |
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| 1040 | 120,000 | 106,000 |
| 1050 | 162,000 | 146,000 |
| 1541H | 181,000 | 164,000 |
| 4340 | 228,000 | 210,000 |
Note: OEM axles are made from 1050 steel which is the industry standard.
 USA Standard Gear Technical Support If you are having trouble choosing the correct USA Standard Gear part, or experiencing issues during or after installation of this part, USA Standard Gear's technicians are available to help answer your questions.
Phone: 1-866-748-0902 (M-F 6am-4pm PST)
Attention California Customers - Not Applicable
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