The Dynatrac Free-Spin™ Heavy-Duty Hub Conversion Kit for 2005-2014 Ford F-250 and F-350 Super Duty trucks is designed to replace the factory unit bearings with fixed spindles for superior strength, and smooth performance. This kit fits both single-rear-wheel (SRW) and dual-rear-wheel (DRW) trucks, and it includes Warn locking hubs.

Free-Spin Hub Conversion Kits include these features:

• Heat-treated chromoly spindles
• Top-quality bearings and seals
• 35-spline, 1.50-inch outer shafts
• Wheel hubs
• Warn locking hubs
• All necessary studs and hardware

Dynatrac Free-Spin Hub Conversion Kits are the only 100-percent U.S.-made kits available.

NOTE: Free-Spin kits for 2005-2014 F-450/550 and 2005 to current Ford dually trucks reuse the factory wheel adapters.