40 spline wheel bearing kit on a white background
Two 14 bolt spindle bearing sets on a white background
Timken bearing upgrade for 14 bolt on a white background
Two sets of heavy duty off-road axle bearings on a white background
40 spline wheel bearing kit on a white background
Two 14 bolt spindle bearing sets on a white background
Timken bearing upgrade for 14 bolt on a white background
Two sets of heavy duty off-road axle bearings on a white background

Crane Axle 40-Spline Rear Spindle Wheel Bearing Set (for Crane Spindle System)

CA01030

$449.99
/
Shipping calculated at checkout.

The Crane Axle 40 Spline Spindle Wheel Bearing Set is designed specifically for Crane Axle 40 spline rear spindles and 40 spline GM 14-Bolt spindle applications. This complete bearing package provides the components necessary to properly support high-strength 40 spline axle assemblies used in competition crawlers, rock bouncers, and heavy-duty off-road builds.

Built around precision Timken bearings and races, this kit is engineered to handle the increased load capacity and shock forces associated with large tires, high horsepower, and aggressive off-road use. The included spacers, seals, and retaining hardware help maintain proper preload and lubrication while improving wheel end durability under extreme operating conditions.

Includes:

  • (2) Timken Inner Bearings and Races
  • (2) Timken Outer Bearings and Races
  • (2) Wheel Seals
  • (2) Bearing Spacers
  • (2) Bearing Retaining Snap Rings

Note: Fits Crane Axle 40 spline spindle system only

Specifications
  • Designed for Crane Axle 40-Spline 14-Bolt Spindles
  • Includes complete bearing, seal, and spacer set
  • Timken bearings and races for precision fit and durability
  • Heavy duty bearing spacers for proper preload setup
  • Wheel seals prevent contamination and retain lubrication
Fitment
Make Model Year Range Axle Application
GM Custom Off-Road Applications Universal GM 14-Bolt Rear Spindle System
Chevrolet Custom Fabricated Axle Builds Universal GM 14-Bolt Rear Spindle System
GMC Custom Fabricated Axle Builds Universal GM 14-Bolt Rear Spindle System

Fitment Notes:

  • Fits Crane Axle 40 spline spindle systems only
  • Compatible with Crane Axle 40 spline GM 14-Bolt spindles
  • Designed for 40 spline axle shaft applications
  • Not intended for factory OE spindle configurations
Tech Insight 

Moving to a 40 spline wheel end setup significantly increases axle strength by allowing the use of larger diameter axle shafts capable of handling higher torque loads and extreme traction conditions. However, larger shafts also place additional stress on wheel bearings and spindle components, making bearing quality and preload control critical.

This system uses Timken bearings combined with precision spacers and retaining hardware to help maintain proper bearing preload and lubrication under heavy load. Proper wheel end support is especially important in rock bouncing and competition environments where repeated shock loading can quickly damage undersized or improperly supported bearing assemblies.

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