Spicer Knuckle Vacuum Seal - Ford F250-F350 2005+

Optional Next Generation Rear 40 Spline Assembly.18 months of design, engineering and testing, resulted in the industries strongest 40 spline rear assembly. The design completed rigorous FEA testing and analysis.
- Forged chromolyspindles, hubs, and axle shafts
- Forged spindles have 4x more yield strengththan 35 spline spindles
- Hubs with over 80,000 psi yield strength to match the spindles
- Tone rings integrated into the hub
- Forged 4340 chromoly 40 spline axle shafts that are 55% strongerthan 4340 35 spline axle shafts

Fusion Elite Kingpin 60 Front Axle Standard Features:

• 72" width for ideal steering geometry and tire clearance when running 40" tires. Other width available or call for custom width.

• High clearance center section with custom low profile fabricated differential cover
• Genuine Made in the USA Spicer® 10.1" (256 mm) ring and pinion gear
• 3.5" diameter x 7/16" wall axle tubes
• Lifetime Warranty US Made Chromoly axle shafts with 1480 solid u-joints
• Massive, race inspired Kingpin inner knuckle Cs and outer knuckles, no ball joints to wear out
• Fully machined springless steering arm attached with 6 ARP Studs
• Steering arm upgrades available for full hydro or virtually any application
• 1/4" plate axle bracketry designed to be the strongest in its class
• 8 x 6.5 bolt pattern
• Massive 13.25" brake rotors and dual piston calipers
• Yukon Hardcore locking hubs