Speedway Engineering's Axles

Axles

Below is a list of our standard axles.
Click on the part # of the axle for more information.

> Speedway Engineering axles are made from the finest grade of premium alloy steel.
> CNC machined.
> Hobbed to exacting standards.
> Double heat-treated to our stringent standards.
> Fully polished to give you the best possible axle.
> The outer end of the axle is the standard 24 spline.
> Solid axles have 2 inches of inner spline.
> Hollow axles have 2.5 inches of inner spline.
> The inner spline is Ford unless otherwise noted.
> Specify length when ordering.

Ask specifically for Speedway Engineering's TORQUE TOUGH™ Axles. You can be rest assured you're getting the highest quality and performance for your racecar.

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about inner axle seals

Part #	Description	Seal Dia.	Seal Length From the end of the axle	Inner spline count
790-31	Grand National, solid	1.375"	8.125"	31 spline
790-R31	Grand National, hollow	1.375"	8.125"	31 spline
790-28	Grand National, solid	1.375"	8.125"	28 spline
790-R28	Mini Stock, hollow	1.25"	6.25"	28 spline
790-30-M	Mini Stock Mopar inner spline, solid	1.25"	6.125"	30 spline
790-35	Dana 60 solid	1.50"	8.125"	35 spline
790-31WCC	Nextel Cup crowned spline, solid	1.67"	3.625"	31 spline
790-31-1	Wide Five, solid	No seal area		31 spline
790-R31-1	Wide Five, hollow	No seal area		31 spline
790-31-1C	Wide Five, solid, crowned spline	No seal area		31 spline
790-R31-1C	Wide Five, hollow, crowned spline	No seal area		31 spline
790-28-1	Wide Five, solid	No seal area		28 spline
These sizes are nominal and are only intended to help identify the part you need.

790-31 Grand National Axle

Description	Part #
31 spline Ford, solid	790-31-LGTH
31 spline Ford, hollow	790-R31-LGTH
28 spline Ford, solid (Special order allow 4 weeks for delivery)	790-28-LGTH
35 spline Dana 60 solid, (Special order allow 4 weeks for delivery)	790-35-LGTH
Note: The seal area is 1.375" dia.
Click here to see stock lengths

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790-R28 Mini Stock Axle

Description	Part #
28 spline Ford, hollow	790-R28-LGTH
Mini Stock Mopar inner spline, solid	790-30-M
Note: The seal area is 1.25" dia.
Click here to see stock lengths

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790-31-1 Wide 5 / Mod-Lite Axle

Description	Part #
31 spline Ford, solid	790-31-1-LGTH
31 spline Ford, hollow	790-R31-1-LGTH
31 spline Ford, solid, crowned spline (special order allow 4 weeks for delivery)	790-31-1C-LGTH
31 spline Ford, hollow, crowned spline (special order allow 4 weeks for delivery)	790-R31-1C-LGTH
28 spline Ford, solid (special order allow 4 weeks for delivery)	790-28-1-LGTH
Click here to see stock lengths

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790-31CT Craftsman Truck Axle

Description	Part #
Craftsman Truck 31 spline, solid	790-31CT-LGTH
Note: 31-spline end is 1½" long for locker clearance. The seal area is 1.267" dia.
Click here to see stock lengths

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790-31WCC Nextel Cup Axle

Description

Part #

31 spline Ford crowned spline axles are:
> HY-TUFF Steel
> CNC machined
> Hobbed to exacting standards
> Double heat-treated
> 100% inspected
> Fully polished.

790-31-WCC-LGTH

Note: 31-spline end is 1½" long for locker clearance. The seal area is 1.267" dia.

Click here to see stock lengths

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In Stock Axle Lengths
Speedway Engineering manufactures a broad line of axles for floater and quick-change rear ends. The chart below indicates the lengths we keep in stock. If you don’t find a length or type of axle to fit your needs, please give us a call. Hollow axles have 2 1/2” of inner spline and may be shortened as needed.
Axle Length	790-31WCC Nextel CupCrowned	790-31 GN 31 Spline Solid	790-R31 GN 31 Spline Hollow	790-31-1 Wide Five Mod-Lite Solid	790-R31-1 Wide Five Mod-Lite Hollow	790-R28 Mini Stock Hollow
25 1/2						X
26 1/2	X					X
26 5/8		X	X	X	X
26 3/4	X			X
26 7/8	X
27	X
27 1/4	X
27 1/2	X					X
27 5/8		X	X	X	X
27 3/4	X
28 1/4	X			X	X
28 1/2						X
28 5/8		X	X	X	X
29 1/2						X
29 5/8		X	X	X	X
30 5/8		X	X	X	X
30 11/16						X
30 3/4				X
31	X
31 1/4	X
31 1/2	X
31 5/8		X	X	X	X
31 11/16						X
31 3/4	X
32	X
32 1/4	X
32 1/2						X
32 5/8		X	X	X	X
33 1/2						X
33 5/8		X	X	X	X
34 5/8		X	X	X	X
35 5/8		X	X	X	X
36 5/8		X	X	X	X
37 5/8				X	X
38 5/8				X	X
39 5/8				X	X