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Fusion 40 Spline HD Fabricated 10" Rear Axle for Toyota Tacoma / 4Runner / FJ Cruiser / Lexus GX 470

Sku: FUS-SF1040-YOTA

Part Number:  FUS-SF1040-YOTA
Brand:  Fusion

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

Tech Notes:
* Includes integrated OE ABS, making it plug and play with the vehicle ABS system
* Reuses the factory brake kit
* Available conversion u-joint to reuse the factory driveshaft
* Optional HD bracket kit makes this a direct bolt-in replacement for the OE axle

The Fusion Fabricated 10" rear axle is the ultimate upgrade to replace the weak rear axle of 2nd Gen 2005-2015 Toyota Tacoma, 3rd Gen 2016 and newer Toyota Tacoma, 4th Gen 2003-2009 Toyota 4Runner, 5th Gen 2010 and newer Toyota 4Runner, 2007-2014 FJ Cruiser, 1st Gen 2003-2009 Lexus GX 470, and 2nd Gen 2010 and newer Lexus GX 470. The axle housing, with 3.5" x 3/8" wall DOM axle tubes along with 1/4" and 1/2" high strength A572 steel center section, is designed to handle heavy loads and punishing terrain.       

40 Spline Assembly: For those looking to run big tires, big power, or tackle the most challenging obstacles, the 40 spline assembly is the solution. Upgrades from the 35 Spline Assembly, include:

  • GEARWORKS Big Bearing Journal 3.812" Case for 10" Gears
  • Integrated load bolt to prevent ring gear deflection
  • GEARWORKS Billet Aluminum 35 Spline Pinion Support with integrated lubrication channel
  • 9310 10" PRO Gears with 35 Spline Pinion
  • ARB Competition 40 Spline Air Locker
  • Forged and heat treated 40 Spline Chromoly Axle Shafts with factory 6 lug bolt pattern


  • GEARWORKS HD Big Bearing dropout 3rd member for 10" Gears provides a significant strength increase over the OE axle       
  • Rock avoiding ground clearance measuring 5.5" from center of tubes to bottom of center section
  • Forged and heat treated 40 Spline Chromoly Axle Shafts with factory 6 lug bolt pattern
  • Integrated ABS ensuring the vehicle operates the same as with the OE Axle
  • Designed to reuse the factory brakes
  • Option HD Laser Cut and CNC Bent bracket kit, making the axle bolt-in ready
  • Available in OE width, wide widths, or custom width
  • Ships painted with a durable 3-step commercial coating in gloss black

Just add gear oil and you are ready to roll!       

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