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1999-2024 Ford F-250/F-350 Super Duty and Excursion Gears and Lockers
Ring and pinion gears, lockers, and overhaul kits for Ford F250 and F350 Super Duty trucks and Ford Excursion


Gear Ratio Recommendations

Tire Size Highway OEM Towing
33" to 36" 3.55 3.73 4.11
37" to 39" 4.11 4.56 4.88
40" to 42" 4.56 4.88 5.13

Gear Ratio Calculator
Engine RPM Calculator
Locker Recommendations

Ford Super Duty trucks feature a solid front axle and heavy duty solid rear axle. The single biggest improvement in traction for these trucks is achieved by installing an Eaton TrueTrac in the rear axle. For extreme off-road use, we recommend an Elocker or OX Locker up front.


Ford F-250 / F-350 Super Duty (1999 - 2004) | Ford Excursion (2000 - 2005)

The following gears, lockers and install kits are available for 1999 to 2004 Ford F-250 and F-350 Super Duty trucks and the 2000 to 2005 Ford Excursion with Dana 50 front axles and Ford Sterling 10.5" rear axles. F350 models feature a Dana 60 front axle and dually trucks have a Dana 80 rear.

Front: Dana 50
F250 and Excursion

Dana 50
30 Spline Full Float Axle Shafts
No Carrier Break
Reverse Rotation




Front: Dana 60
F350

Dana 60
35 Spline Full Float Axle Shafts
4.10/4.56 Carrier Break
Reverse Rotation


Eaton E-Locker (4.10 -)
Eaton E-Locker (4.56 +)
Eaton TrueTrac (4.10 -)
Eaton TrueTrac (4.56+)
Ox Locker (4.10 -)
Ox Locker (4.56 +)

RCV Chromoly Axle Shafts (99-04)
Rear: Ford 10.5"
F250 and F350 SRW
and Excursion

Ford 10.5
35 Spline Full Float Axle Shafts
37 Spline Pinion
No Carrier Break


Eaton TrueTrac
OX Locker



Rear: Dana 80

F350 Dually

35 Spline Full Float Axle Shafts
11.25" Ring Gear
3.73/4.10 Carrier Break





Ford F-250 / F-350 Super Duty (2005 - 2007)

The following gears, lockers and install kits are available for 2005 to 2007 Ford F-250 and F-350 Super Duty trucks with Dana 60 front axles and Ford Sterling 10.5" rear axles. Note: Ford 10.25" long pinion gears are also compatible with the Ford 10.5" axle when a Ford 10.25" master install kit is used. 2005 and newer front Dana 60 axles use different axle shafts than the earlier axles.

Front: Dana 60
Dana 60
35 Spline Full Float Axle Shafts
4.10/4.56 Carrier Break
Reverse Rotation


Eaton E-Locker (4.10 -)
Eaton E-Locker (4.56 +)
Eaton TrueTrac (4.10 -)
Eaton TrueTrac (4.56+)
Ox Locker (4.10 -)
Ox Locker (4.56 +)

RCV Chromoly Axle Shafts (05-14)
Rear: Ford 10.5"
F250 and F350 SRW

Ford 10.5
35 Spline Full Float Axle Shafts
37 Spline Pinion
No Carrier Break


Eaton TrueTrac
OX Locker



Rear: Dana 80

F350 Dually

35 Spline Full Float Axle Shafts
11.25" Ring Gear
3.73/4.10 Carrier Break




Ford F-250 / F-350 Super Duty (2008 - 2010)

The following gears, lockers and install kits are available for 2008 to 2010 Ford F-250 and F-350 Super Duty trucks with Dana 60 front axles and Ford Sterling 10.5" rear axles. Note: Ford 10.25" long pinion gears are also compatible with the Ford 10.5" axle when a Ford 10.25" master install kit is used.

Front: Dana 60
Dana 60
35 Spline Full Float Axle Shafts
4.10/4.56 Carrier Break
Reverse Rotation


Eaton E-Locker (4.10 -)
Eaton E-Locker (4.56 +)
Eaton TrueTrac (4.10 -)
Eaton TrueTrac (4.56+)
Ox Locker (4.10 -)
Ox Locker (4.56 +)

RCV Chromoly Axle Shafts (05-14)
Rear: Ford 10.5"
F250 and F350 SRW

Ford 10.5
35 Spline Full Float Axle Shafts
37 Spline Pinion
No Carrier Break


Eaton TrueTrac
OX Locker



Rear: Dana 80

F350 Dually

35 Spline Full Float Axle Shafts
11.25" Ring Gear
3.73/4.10 Carrier Break




Ford F-250 / F-350 Super Duty (2011 - 2016)

The following gears, lockers and install kits are available for 2011 to 2016 Ford F-250 and F-350 Super Duty trucks with Dana 60 front axles and Ford Sterling 10.5" rear axles.

Front: Dana 60
Dana 60
35 Spline Full Float Axle Shafts
4.10/4.56 Carrier Break
Reverse Rotation


Eaton E-Locker (4.10 -)
Eaton E-Locker (4.56 +)
Eaton TrueTrac (4.10 -)
Eaton TrueTrac (4.56+)
Ox Locker (4.10 -)
Ox Locker (4.56 +)

RCV Chromoly Axle Shafts (05-14)
Rear: Ford 10.5"
F250 and F350 SRW

Ford 10.5
35 Spline Full Float Axle Shafts
37 Spline Pinion
No Carrier Break


Eaton TrueTrac
OX Locker



Rear: Dana 80

F350 Dually

35 Spline Full Float Axle Shafts
11.25" Ring Gear
3.73/4.10 Carrier Break





Ford F-250 / F-350 Super Duty (2017 - 2024)

The following gears, lockers and install kits are available for 2017 to 2024 F-250 and F-350 Super Duty trucks with Dana 60 "Short" front axles and Ford Sterling 10.5", Dana M275, or Dana M300 rear axles.

Front: Dana 60 Short
2017 - 2024

Dana 60
28 Spline Pinion
Reverse Rotation


Rear: Ford 10.5"
2017 - 2023 F250

Ford 10.5
35 Spline Full Float Axle Shafts
37 Spline Pinion
No Carrier Break


Eaton TrueTrac
OX Locker



Rear: Dana M275

2017 - 2022
F250HD and F350 SRW

36 Spline Full Float Axle Shafts
10.8" Ring Gear
No Carrier Break




Rear: Dana M300

2017 - 2022
F350 Dually

37 Spline Full Float Axle Shafts
11.8" Ring Gear
3.73/4.10 Carrier Break