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Mako Driveshafts

6-40-521 SPICER Stub Shaft for 4.000 x .134 Tubing 1710 Series 16 Spline

6-40-521 SPICER Stub Shaft for 4.000 x .134 Tubing 1710 Series 16 Spline

Part # / SKU: 6-40-521S

Regular price $142.04 USD
Regular price Sale price $142.04 USD
Sale Sold out
Shipping calculated at checkout.
Stock Available: 3

You are buying a Brand New Genuine Spicer Stub Shaft




Glidecote Spline


Major Diameter


Spline Count


Involute Spline


Fits Tube Diameter


Fit Tube Wall Thickness


End Of Spline To Weld (K)


Length Of Spline (L)


End Of Spline To Radius (R)


Butt Diameter



Fast and Free shipping to USA Contiguous

No hassle 30 day returns

Superior Quality

One Year Warranty





Determine your Series

Determine the Series of your U-Joint

Common U-Joint Series

Care Instructions

All of our parts are packaged to the best of our ability. If you receive an item with inferior packaging, please let us know so that we can improve the delivery and our service to you as the customer

Shipping & Returns

This item can be returned within 30 days of purchase. You are responsible for returning the item. No returns are accepted if rubber boots have been torn or damaged during installation. Please contact us if you are unsure of fitment prior to purchase

View full details

For (USA Contiguous States) orders that total over $550 and the dimensions of the products are shorter than 48" we will offer you our wholesale pricing and we will ship for FREE. Orders with dimensions over the 48" with a total that exceeds $1550, we will ship using our Freight Service, at our expense and we will offer you our wholesale pricing. Send us an email so that we can customize your order

  • Free Shipping

    We will cover the shipping costs on this item to all the USA contiguous States. We have you covered!

  • Check the OEM # of your part before you purchase

    If you have no idea what the original part number is for your Driveshaft, CV Joint or Component - contact us for the appropriate diagram or for assistance. We are here to help!