Drivetrain Differentials and Rear-End Components

SPIDERTRAX

Spidertrax Ultimate 40 spline Inner Axle Shaft Assembly - Single 38-44 (Sa/Sb are Measured in Inches from Center of U-Joint to End of Shaft)  Spline Detail: 40 Spline Inner Axle Shaft 24/48 Pitch 45 Pressure Angle Class 6/7 Fillet Root Side Fit

$1,757.59

SKU: S06P AXLUSD40M2

In Stock
In Stock
Ships by Jun 21
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Non-Returnable Item
INSTALL DIFFICULTY
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Description

The Spidertrax Ultimate Inner Axle Shaft is a 40-spline shaft engineered to work with Spidertrax Ultimate U-Joints and Ultimate Stub Shafts for off-road performance. Made from 300M alloy steel, it undergoes CNC turning, vacuum quenching, deep freeze (cryogenic), and double tempering for enhanced hardness, strength, and fatigue life. It is designed to be sealed with the Spidertrax High-Performance Oil Seal Kit. All aspects of design and manufacturing are done in Colorado, USA. Axle shafts are sold individually. Lead times vary as they are custom made, and orders are non-refundable.

Fitment

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Specifications

BrandSPIDERTRAX
Part NumberS06P AXLUSD40M2

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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