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Fusion 40 Spline Semi-Float 60 Rear Axle Assembly for Jeep Wrangler JL

Sku: FUS-SF60-JL

Part Number: FUS-SF60-JL
Brand: Fusion

For current axle lead times and shipping details:  See this page

Fusion 40 Spline Semi-Float 60 Rear Axle for 2018 and newer Jeep Wrangler JL. Introducing the latest addition to our line of industry leading Jeep Wrangler JL axle assemblies, the Fusion Semi-Float 60 rear axle! The axle uses the same Low Pinion Elite 60 Housing that we use on our Elite Full Float 60. The same casting and 3.5" x 7/16" axle tubes. Go big, or don't get home. 

New for the JL: Standard 40 spline Forged Chromoly Axle Shafts and the larger SET80 bearings found on the JL Rubicon. Designed for up to 39" tires. Available in two standard widths and also custom width.


  • Fusion Elite 60 Housing with HD Nodular Iron Diff Cover
  • HD JL Brackets, Laser Cut from 1/4" Plate Steel and CNC bent and fully welded
  • Massive 3.5" diameter tubes with 7/16" wall thickness
  • Fusion 40 Spline 4130 heat treated chromoly axle shafts with a lifetime warranty against breakage
  • 5x5 JL Bolt Pattern
  • Forged U-bolt style yoke with U-bolt kit
  • Utilizes Dana 60 lockers/carrier and gear set
  • Commercial Paint Application. Learn more here:
  • Designed and manufactured in the USA

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