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Mustang Gears & Rear End Gear Kits

Adding performance Mustang gears or Mustang ring and pinion gears to your rear end is a great way to increase acceleration & sometimes improve mileage.

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These Ford Performance & Yukon gear kits are offered in 3.08, 3.15, 3.27, 3.31, 3.55, 3.73, 4.10, and 4.30 for your 7.5" and 8.8" rear ends. Pick them up with a new rear differential gasket, gear install kit, gear oil, friction modifier, and everything else needed to complete your installation.

These Mustang Gears Fit: 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, and 2020 Ford Mustang.

1986-2014 Mustang 8.8 Rear End Gear Kits

  • Ford Performance 3.55 Gear Kit for 8.8" Rear End (86-09)
    #LRS-4209FRA-K
    $299.99
    Ford Performance Logo
  • Ford Performance 3.73 Gear Kit for 8.8" Rear End (86-09)
    #LRS-4209FRB-K
    $279.99
    Ford Performance Logo
  • Ford Performance 4.10 Gears & Install Kit 8.8" Rear End (86-09)
    #LRS-4209FRC-K
    $279.99
    Ford Performance Logo
  • Yukon 4.11 Gear Kit (86-09)
    #LRS-4209FRH-K
    $279.99
    Yukon Logo
  • Yukon 3.73 Gear Kit (86-09)
    #LRS-4209FRG-K
    $279.99
    Yukon Logo
  • Ford Performance 3.55 Gear Kit for 8.8" Rear End (10-14)
    #LRS-4209FRF-K
    $309.99
    Ford Performance Logo
  • Ford Performance 3.73 Gear Kit for 8.8" Rear End (10-14)
    #LRS-4209FRD-K
    $289.99
    Ford Performance Logo
  • Ford Performance 4.10 Gear Kit for 8.8" Rear End (10-14)
    #LRS-4209FRE-K
    $289.99
    Ford Performance Logo
  • Yukon 3.73 Gear Kit (10-14)
    #LRS-4209FRGK
    $279.99
    Yukon Logo
  • Yukon 4.11 Gear Kit (10-14)
    #LRS-4209FRHK
    $279.99
    Yukon Logo
  • Ratech Ford 8.8" Pinion Depth Setting Tool
    #RAT-10006
    $34.99
  • Ratech Pinion Yoke Holder Tool
    #RAT-18001
    $29.99

1986-14 Mustang 8.8 Ring & Pinion Kits

  • LubeLocker 8.8" Rear Differential Cover Gasket (86-14)
    #LLR-F880
    $24.99
  • Ford Performance 3.27 Gears - 8.8" (86-14)
    #M420988327
    $209.99
    Ford Performance Logo
  • Ford Performance 3.31 Gears - 8.8" (86-14)
    #M420988331
    $194.99
    Ford Performance Logo
  • Ford Performance 3.55 Gears - 8.8" (86-14)
    #M420988355
    $199.99
    Ford Performance Logo
  • Ford Performance 3.73 Gears - 8.8" (86-14)
    #M420988373
    $168.99
    Ford Performance Logo
  • Yukon 3.73 Gears (86-14)
    #YG-F88-373
    $174.99
    Yukon Logo
  • Yukon 4.11 Gears (86-14)
    #YG-F88-411
    $174.99
    Yukon Logo
  • Ford Performance 4.10 Gears - 8.8" (86-14)
    #M420988410
    $178.99
    Ford Performance Logo
  • 8.8" Rear Differential Fluid & Seal Kit (86-04)
    #LRS-F8804K
    $69.99
    Royal Purple Logo
  • 8.8" Rear Differential Fluid & Seal Kit (05-14)
    #LRS-F8805K
    $69.99
    Royal Purple Logo
  • Royal Purple Max-Gear Gear Oil & Friction Modifier Kit 75w90
    #RP-12300K
    $49.99
    Royal Purple Logo
  • Ford Performance Friction Modifier
    #M19546A
    $13.99
    Motorcraft Logo
  • Royal Purple 75w-140 Max Gear Oil
    #RP-01301
    $22.99
    Royal Purple Logo
  • Royal Purple 75w-140 Max Gear Oil & Friction Modifier Kit
    #RP-01301K
    $49.99
    Royal Purple Logo
  • Lisle Fluid Extractor/Transfer Pump
    #LRS-TX17282
    $79.99
    Lisle Specialty Tools Logo

2015-20 Mustang Rear End Gears

  • Ford 3.31 Gears (15-19)
    #LRS-4209-331
    $299.99
    Ford Logo
  • Ford Performance 3.73 Gears (15-19)
    #M420988373A
    $197.99
    Ford Performance Logo
  • Ford Performance 4.09 Gears (15-19)
    #M420988409A
    $289.99
    Ford Performance Logo
  • Ford Performance Super 8.8" Ring Gear Bolt Kit (15-19)
    #M4216C
    $11.99 Now $10.57
    Ford Performance Logo
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Mustang Gears & Rear End Gear Kits Tech Info

Ring Gear: The Mustang ring gear bolts to the carrier and is driven by the pinion gear.

Pinion Gear: The Mustang pinion gear turns the pinion gear, transferring power from the driveline.

Shim: A shim is a thin piece of metal that is used to either adjust the fitment of other parts or take up a gap.

I.R.S.: This stands for “Independent Rear Suspension”, a housing which allows the left and right axles to move up and down separately from each other. 99-04 Mustang Cobras and 2015-2020 Mustangs are equipped with IRS systems.

Crush Sleeve: This is a collapsible spacer which installs on your Mustang's pinion and preloads the pinion bearings. Crush sleeves are not reusable and must be replaced if the pinion nut is loosened or removed.