2-40-2021 1.375 in x 16 Spline Stub 1310-1350 Series fits 2.0" x 0.120 Tube
2-40-2021 1.375 in x 16 Spline Stub 1310-1350 Series fits 2.0" x 0.120 Tube
2-40-2021 1.375 in x 16 Spline Stub 1310-1350 Series fits 2.0" x 0.120 Tube
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2-40-2021 1.375 in x 16 Spline Stub 1310-1350 Series fits 2.0" x 0.120 Tube

Aftermarket
2-40-2021
In stock
$51.00
Upgrade Your Driveline with the 1310-1350 Series 1.375 in x 16 Spline Stub 2-40-2021 The 2-40-2021...
$51.00

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2-40-2021 1.375 in x 16 Spline Stub 1310-1350 Series fits 2.0" x 0.120 Tube

Upgrade Your Driveline with the 1310-1350 Series 1.375 in x 16 Spline Stub 2-40-2021

The 2-40-2021 Spline Stub is a high-strength, precision-machined component engineered for 1310 and 1350 series drivelines. Its 1.375-inch diameter with 16 splines ensures a secure, exact fit, while the robust construction handles high torque loads in off-road, agricultural, and performance driveline applications.

Made from heat-treated steel and coated for corrosion resistance, this spline stub is designed to withstand heavy-duty use without distortion or failure. Its precise dimensions, including a 5.188" end-of-spline-to-weld and 2.250" spline length, guarantee smooth power transfer, reduced driveline vibration, and reliable performance.

Perfect for trucks, SUVs, Jeeps, tractors, and custom driveline setups, the 2-40-2021 Spline Stub is ideal for both replacements and upgrades. Engineered to meet or exceed OEM specifications, it delivers consistent, dependable operation even in the harshest conditions.

 

Features and Benefits:

  • High-Strength Heat-Treated Steel – Maximum durability and wear resistance for heavy-duty applications.

  • 1.375" Diameter x 16 Splines – Ensures precise, secure fit with compatible yokes and shafts.

  • Engineered for High Torque Loads – Handles performance and off-road demands without distortion.

  • Corrosion-Resistant Coating – Protects against rust and environmental damage.

  • Optimized Dimensions – Includes 5.188" end-of-spline-to-weld, 2.250" spline length, and 4.625" end-of-spline-to-radius for smooth integration.

  • 1310-1350 Series Compatibility – Works with a wide range of off-road, agricultural, and industrial drivelines.

  • Smooth Power Transfer – Reduces vibration and noise for better driveline performance.

  • OEM-Level Fitment – Hassle-free installation with tight tolerances.

  • 1-Year Warranty – Peace of mind with manufacturer-backed coverage.

Technical Specifications:

Specification Details
Part Number 2-40-2021
Series 1310-1350
Spline Diameter 1.375 in (35 mm)
Number of Splines 16
Tube Size 2.000 in x 0.120 in (50.8 mm x 3 mm)
End of Spline to Weld (K) 5.188 in (132 mm)
Length of Spline (L) 2.250 in (57 mm)
End of Spline to Radius (R) 4.625 in (117.5 mm)
Butt Diameter 1.771 in (45 mm)
Material Heat-Treated Steel
Finish Corrosion-Resistant
Compatible Equipment Type Automotive, Agricultural, SUV, Truck
Warranty 1 Year

 

Vehicle / Equipment Compatibility:

  • Off-Road Vehicles: Jeeps, trucks, SUVs with 1310-1350 series drivelines

  • Agricultural Equipment: Tractors and machinery with 1310 or 1350 shafts

  • Heavy-Duty / Performance Applications: Custom driveline builds and high-performance setups

What’s Included:

  • 1 x 2-40-2021 1.375 in x 16 Spline Stub 1310-1350 Series

  • Installation Instructions

  • 1-Year Warranty Card

REVIEWS

BR

Installed this spline stub on my Jeep’s 1350 series driveline. Fit perfectly and transfers power smoothly. Very strong steel, handles off-road torque with no issues.

Brian R.

Boise, ID

★★★★★
EM

Perfect fit for my 2.0" tube driveline. Smooth operation and very durable. Ideal for high-performance and heavy-duty builds. Highly recommend this spline stub!

Emily M.

Fayetteville, NC

★★★★★
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Effective Date: October 2024
We offer a 30-day return policy, allowing you to request a return within 30 days of receiving your item. To qualify for a return, the item must be in its original condition—unused, with tags, and in its original packaging. A receipt or proof of purchase is also required.

To initiate a return, please contact us at info@riotparts.com. Returns must be shipped to the address provided upon request. If your return is approved, we will issue a return shipping label along with detailed instructions.

Important
Returns sent without prior authorization will not be accepted.

For any return-related inquiries, please reach out to us at info@riotparts.com.

Return Shipping Address
The return shipping address will be determined based on the requestor’s location to ensure the nearest return facility is used.

Possible return locations include:
10880 Lear Blvd.
Reno, NV 89506, United States
931 W. Bardin Rd., Suite 150–200
Arlington, TX 76017, United States
3035 Campus Dr.
Hatfield, PA 19440, United States
5789 N. Graham Road, Ste 200
Whiteland, IN 46184, United States
2020 NE Aloclek Dr 4711 N Lamon Ave
#118 STE 12, Hillsboro, OR 97124, United States

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We recommend inspecting your order upon receipt. If you find that an item is defective, damaged, or if you received the wrong item, please contact us immediately so we can address the issue.

Exceptions / Non-Returnable Items
Certain items cannot be returned, including:
• Electrical parts that have been installed or used
• Special order parts that were custom ordered for you
• Items that have been damaged due to improper installation or use

If you have questions or concerns about a specific item, please contact us for assistance.

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For exchanges, the quickest option is to return the item you have. Once the return is accepted, you can make a separate purchase for the new item.

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We will notify you once we receive and inspect your return to inform you whether your refund is approved. If approved, you will be automatically refunded using your original payment method within 10 business days. Please be aware that it may take additional time for your bank or credit card company to process and post the refund.

If more than 15 business days have passed since your return was approved and you haven’t received your refund, please contact us at info@riotparts.com.

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