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Filthy Motorsports: Store > Ford 9 Inch
Ford 9 Inch Axle Parts, Gears, and Upgrades

Ford 9 Inch Axle Models:

Ford 9 Inch (Standard)
Ford 9 Inch High Pinion (Reverse Rotation)
Ford 9 Inch Daytona (Pinion Support)

Axle Specifications:

Ring Gear Diameter: 9.000
Diff Cover Bolts: --
Ring Gear Bolts: 10
Axle Spline Count: 35 / 31 / 28
Axle Shaft Style: Semi-Floating
C-Clips: --
Pinion Support: Yes
Pinion Nut: 1-1/16"
Pinion Crush Sleeve: Yes / Solid Spacer
Carrier Breaks: No
Dropout Carrier: Yes

Torque Specifications:

Pinion Preload New: 13 to 15 in-lbs
Pinion Preload Reused: 6 to 7 in-lbs
Ring Gear Backlash: .010-.015" (OEM)
.006-.010" (AM)
Ring Gear Bolt Torque: 60 ft-lbs
Carrier Bearing Caps: 60 ft-lbs

Popular Applications:

Ford F-100 1957 - 1983 Rear
Ford F-150 1968 - 1987 Rear
Ford Bronco 1966 - 1986 Rear
Ford Mustang 1965 - 1973 Rear
Mercury Cougar 1965 - 1973 Rear

Axle Images:



Axle Details

The Ford 9 Inch axle may have been discontinued by Ford in the 80's but thanks to its large 9" ring gear, drop out style 3rd member, 35 spline axle shafts, and easy maintenance, it has continued to grow in popularity and now has more aftermarket support than any other axle. Filthy Motorsports has got you covered with everything from OEM replacement parts to upgraded gears, axle shafts, and lockers, all the way up to custom fabricated housings and complete axles built for drag racing or professional desert racing.
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ARB Air Locker
Ford 9 Inch ARB Air Locker RD119 | 31 Spline
List Price: $1,095.64
Your Price: $950.00

ARB Air Lockers use compressed air to engage and disengage their internal locking mechanism at the simple flip of a switch. They feature components and gears that are 30% stronger than OEM differentials to offer superior strength, durability, and off-road traction.
ARB Air Locker
Ford 9 Inch ARB Air Locker RD99 | 35 Spline
List Price: $1,182.82
Your Price: $1,005.00

ARB Air Lockers use compressed air to engage and disengage their internal locking mechanism at the simple flip of a switch. They feature components and gears that are 30% stronger than OEM differentials to offer superior strength, durability, and off-road traction.
ARB Air Locker
Ford 9 Inch ARB Air Locker RD99CE | 35 Spline (Competition Edition)
List Price: $2,031.00
Your Price: $1,975.00

ARB Air Lockers use compressed air to engage and disengage their internal locking mechanism at the simple flip of a switch. They feature components and gears that are 30% stronger than OEM differentials to offer superior strength, durability, and off-road traction.
Spidertrax ARB Engagement Collar
Spidertrax Upgraded Ford 9-Inch ARB RD99 Engagement Collar
List Price: $199.95
Your Price: $195.95

Spidertrax ARB RD99 Upgraded Engagement Collars are designed to increase the strength and durability of Ford 9" ARB Air Lockers while also improving engagement and disengagement under normal loads. They are CNC machined from 4340 Chrome Moly steel and heat treated.
Detroit Locker
Ford 9 Inch Detroit Locker 187SL13A | 28 Spline (3.25 & Up)
List Price: $686.94
Your Price: $559.95

Detroit Lockers have a legendary reputation with off-roaders and feature a heavy duty, efficient, and effective design that offers 100% traction to both wheels while still allowing for wheel speed differentiation for easy turning on the street and other high-traction surfaces.
Detroit Locker
Ford 9 Inch Detroit Locker 187SL17B | 31 Spline (3.25 & Up)
List Price: $686.94
Your Price: $559.95

Detroit Lockers have a legendary reputation with off-roaders and feature a heavy duty, efficient, and effective design that offers 100% traction to both wheels while still allowing for wheel speed differentiation for easy turning on the street and other high-traction surfaces.
Detroit Locker
Ford 9 Inch Detroit Locker 187S160A | 35 Spline (3.25 & Up)
List Price: $686.94
Your Price: $559.95

Detroit Lockers have a legendary reputation with off-roaders and feature a heavy duty, efficient, and effective design that offers 100% traction to both wheels while still allowing for wheel speed differentiation for easy turning on the street and other high-traction surfaces.
Yukon Grizzly Locker
Ford 9 Inch Yukon Grizzly Locker YGLF9-28 | 28 Spline
List Price: $773.38
Your Price: $564.55

Yukon Grizzly Lockers feature internal disengagement gears that are 350% stronger than those used in a Detroit Locker making them more reliable and better suited for aggressive off-road racing. Assembled in the USA and backed by Yukon's industry leading 1 year warranty.
Yukon Grizzly Locker
Ford 9 Inch Yukon Grizzly Locker YGLF9-31 | 31 Spline
List Price: $787.48
Your Price: $574.85

Yukon Grizzly Lockers feature internal disengagement gears that are 350% stronger than those used in a Detroit Locker making them more reliable and better suited for aggressive off-road racing. Assembled in the USA and backed by Yukon's industry leading 1 year warranty.
Yukon Grizzly Locker
Ford 9 Inch Yukon Grizzly Locker YGLF9-31-LB | 31 Spline (Load Bolt)
List Price: $767.84
Your Price: $594.66

Yukon Grizzly Lockers feature internal disengagement gears that are 350% stronger than those used in a Detroit Locker making them more reliable and better suited for aggressive off-road racing. Assembled in the USA and backed by Yukon's industry leading 1 year warranty.
Yukon Grizzly Locker
Ford 9 Inch Yukon Grizzly Locker YGLF9-31-RACE | 31 Spline (Race Only)
List Price: $767.51
Your Price: $560.26

Yukon Grizzly Lockers feature internal disengagement gears that are 350% stronger than those used in a Detroit Locker making them more reliable and better suited for aggressive off-road racing. Assembled in the USA and backed by Yukon's industry leading 1 year warranty.
Yukon Grizzly Locker
Ford 9 Inch Yukon Grizzly Locker YGLF9-35 | 35 Spline
List Price: $787.48
Your Price: $574.85

Yukon Grizzly Lockers feature internal disengagement gears that are 350% stronger than those used in a Detroit Locker making them more reliable and better suited for aggressive off-road racing. Assembled in the USA and backed by Yukon's industry leading 1 year warranty.
Yukon Grizzly Locker
Ford 9 Inch Yukon Grizzly Locker YGLF9-35-LB | 35 Spline (Load Bolt)
List Price: $767.84
Your Price: $594.66

Yukon Grizzly Lockers feature internal disengagement gears that are 350% stronger than those used in a Detroit Locker making them more reliable and better suited for aggressive off-road racing. Assembled in the USA and backed by Yukon's industry leading 1 year warranty.
Yukon Grizzly Locker
Ford 9 Inch Yukon Grizzly Locker YGLF9-35-RACE | 35 Spline (Race Only)
List Price: $897.37
Your Price: $655.06

Yukon Grizzly Lockers feature internal disengagement gears that are 350% stronger than those used in a Detroit Locker making them more reliable and better suited for aggressive off-road racing. Assembled in the USA and backed by Yukon's industry leading 1 year warranty.
Yukon Grizzly Locker
Ford 9 Inch Yukon Grizzly Locker YGLF9-35-RACE-LB | 35 Spline (Race/Load Bolt)
List Price: $972.93
Your Price: $710.22

Yukon Grizzly Lockers feature internal disengagement gears that are 350% stronger than those used in a Detroit Locker making them more reliable and better suited for aggressive off-road racing. Assembled in the USA and backed by Yukon's industry leading 1 year warranty.
Eaton Detroit TrueTrac
Ford 9 Inch Eaton Detroit TrueTrac 912A587 | 28 Spline (3.25 & Up)
List Price: $603.99
Your Price: $529.95

Detroit Truetrac Lockers are maintenance free, fully mechanical, Torsen style limited slip differentials with helical gears instead of clutch packs (which wear out over time) to provide constant torque to both wheels while still allowing for smooth turns on pavement.
Eaton Detroit TrueTrac
Ford 9 Inch Eaton Detroit TrueTrac 913A586 | 31 Spline (3.25 & Up)
List Price: $603.99
Your Price: $529.95

Detroit Truetrac Lockers are maintenance free, fully mechanical, Torsen style limited slip differentials with helical gears instead of clutch packs (which wear out over time) to provide constant torque to both wheels while still allowing for smooth turns on pavement.
Spartan Locker
Ford 9" Spartan Locker | 28 and 31 Spline
List Price: $383.84
Your Price: $319.87

Spartan Lockers are ratchet style lockers that replace the spider gears in your stock differential to provide traction to both wheels when it is needed most. They are affordable, don't require removing the carrier for installation, and are covered by a one year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 28 Spline (Steel)
List Price: $235.68
Your Price: $196.40

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 28 Spline (Steel - Lightweight)
List Price: $235.68
Your Price: $196.40

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 28 Spline (Aluminum)

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 31 Spline (Steel)
List Price: $235.68
Your Price: $196.40

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 31 Spline (Steel - Lightweight)
List Price: $235.68
Your Price: $196.40

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 33 Spline (Steel)
List Price: $159.73
Your Price: $133.11

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 35 Spline (Steel)
List Price: $251.33
Your Price: $209.44

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 35 Spline (Steel - Mark Williams)

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 35 Spline (Steel - Small Bearing)
List Price: $294.53
Your Price: $245.44

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 40 Spline (Steel)
List Price: $286.27
Your Price: $238.56

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 40 Spline (Steel - Large Bearing)
List Price: $343.18
Your Price: $285.98

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Spool
Ford 9 Inch Yukon Performance Spool | 40 Spline (Aluminum - Large Bearing)
List Price: $413.46
Your Price: $344.55

Yukon Performance Spools are made of the highest quality materials and are the ultimate traction aid for full size trucks, high horsepower applications, and off-road racing. They are designed to replace your entire differential carrier and are backed by a 1 year warranty.
Yukon Mini Spool
Ford 9 Inch Yukon Mini Spool | 28 Spline
List Price: $48.62
Your Price: $40.52

Yukon Mini Spools are an effective and affordable way to give your axle full traction to both wheels at all times by simply replacing the spider gears in your open differential. Sold as off-road and race use only and backed by a 1 year warranty.
Yukon Mini Spool
Ford 9 Inch Yukon Mini Spool | 31 Spline
List Price: $48.62
Your Price: $40.52

Yukon Mini Spools are an effective and affordable way to give your axle full traction to both wheels at all times by simply replacing the spider gears in your open differential. Sold as off-road and race use only and backed by a 1 year warranty.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Yukon Master Overhaul Kit | LM102910 Bearings (Crush Sleeve)
List Price: $211.66
Your Price: $176.38

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Yukon Master Overhaul Kit | LM102910 Bearings (Solid Spacer)
List Price: $222.54
Your Price: $185.45

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Yukon Master Overhaul Kit | LM501310 Bearings (Crush Sleeve)
List Price: $212.48
Your Price: $177.07

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Yukon Master Overhaul Kit | LM603011 Bearings (Crush Sleeve)
List Price: $226.43
Your Price: $188.69

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Yukon Master Overhaul Kit | LM603011 Bearings (Solid Spacer)
List Price: $237.32
Your Price: $197.77

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Yukon Master Overhaul Kit | LM104911 Bearings (Crush Sleeve)
List Price: $230.62
Your Price: $192.18

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Daytona Yukon Master Overhaul Kit | LM102910 Bearings (Crush Sleeve)
List Price: $255.71
Your Price: $213.09

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Daytona Yukon Master Overhaul Kit | LM102910 Bearings (Solid Spacer)
List Price: $266.58
Your Price: $222.15

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Daytona Yukon Master Overhaul Kit | LM501310 Bearings (Crush Sleeve)
List Price: $255.71
Your Price: $213.09

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Daytona Yukon Master Overhaul Kit | LM603011 Bearings (Crush Sleeve)
List Price: $255.71
Your Price: $213.09

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Daytona Yukon Master Overhaul Kit | LM603011 Bearings (Solid Spacer)
List Price: $266.58
Your Price: $222.15

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Daytona Yukon Master Overhaul Kit | LM104911 Bearings (Crush Sleeve)
List Price: $255.71
Your Price: $213.09

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Daytona Yukon Master Overhaul Kit | LM104911 Bearings (Solid Spacer)
List Price: $266.58
Your Price: $222.15

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Yukon Master Overhaul Kit | LM104911 Bearings (28 Spline Pinion)
List Price: $411.95
Your Price: $343.29

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch Yukon Master Overhaul Kit | LM104911 Bearings (35 Spline Pinion)
List Price: $411.95
Your Price: $343.29

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch High Pinion Yukon Master Overhaul Kit | LM603011 Bearings (Reverse)
List Price: $255.71
Your Price: $213.09

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Master Ring and Pinion Install Kit
Ford 9 Inch High Pinion Yukon Master Overhaul Kit | LM104911 Bearings (Reverse)
List Price: $255.71
Your Price: $213.09

Yukon master overhaul kits include everything you need to rebuild your differential, install new ring and pinion gears or add a differential locker. Every component is of the highest quality and engineered specifically for your application to ensure accurate set up.
Yukon Minor Ring and Pinion Install Kit
Ford 9 Inch Yukon Minor Overhaul Kit | LM102910 Bearings
List Price: $46.04
Your Price: $38.37

Yukon minor overhaul kits include all of the seals, shims, and small parts you need to install new ring and pinion gears or add a differential locker (using the existing bearings). Every part is of the highest quality and made specifically for each axle application.
   
 
Don't see the particular axle or drivetrain parts you need? We carry more products and brands than we can make available on this website so give us a call or send us an email and chances are we can get what you need at a great price.