Camburg Engineering CAM-020044 2.50" Race Series Rear Hub Kit 6x5.50" 40-Spline Full-Float

The Camburg Engineering CAM-020044 2.50" Race Series Rear Hub Kit is a championship-proven full-float rear hub system built for serious race trucks and high-performance prerunners. Featuring a 6x5.50" bolt pattern and 40-spline driveplate, this kit is engineered to deliver the strength and reliability demanded by off-road racing at the highest level.

Camburg CNC machines the hub body in-house from premium 7075-T6 aluminum — stronger than the 6061-T6 used in many competing designs — and finishes it with a type II matte black anodize for corrosion resistance and durability. The design uses larger 7" and 8" round stock material for the hub body, providing maximum strength in the critical wheel stud area.

Key Features:

• Full-float rear hub design with wide bearing spread for increased strength and longevity
• 7075-T6 aluminum hub body — CNC machined in-house and type II anodized matte black
• 40-spline driveplate machined from 4340 chromoly, heat-treated, stress relieved, and plated for corrosion resistance
• In-house machined 4340 chromoly wheel studs — heat-treated, stress relieved, and black-oxide coated; 5/8-18 threads with 11/16" shoulder
• Timken bearings and races with SKF seals and stainless retainer ring
• Tapered hub-centric center caps for fast, precise wheel installation on the race course
• 6x5.50" bolt pattern — compatible with a wide range of off-road and racing wheels
• Requires 4.25" center-bore wheels machined for 5/8" wheel studs
• Includes all necessary hardware, O-rings, and bearing spacers

Note: Weld-in snouts and Camburg's custom axle nut wrench are required to complete the installation and are sold separately.