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Chevy Silverado and GMC Sierra 1500 Gears, Lockers, and Rebuild Kits
Ring and pinion gears, lockers, and overhaul kits for Chevy Silverado and GMC Sierra 1500 series trucks.



Chevy Silverado 1500 Axle Parts

Gear Ratio Recommendations

Tire Size Highway OEM Towing
31" to 33" 3.08 3.42 3.73
34" to 36" 3.73 4.11 4.56
37" to 39" 4.56 4.88 5.13

Tools: Gear Ratio Calculator / Engine RPM Calculator
Locker Recommendations

Chevy 1500 series trucks feature a slightly undersized aluminum "clam shell" style front IFS differential. While gears can be replaced to account for larger tire sizes, we do not recommend lockers for the front of these trucks. For the rear, we highly recommend the Eaton TrueTrac for most applications or a selectable ARB Air Locker for extreme off-road use.


Chevy Silverado / GMC Sierra 1500 (1999-2007)

The following gears, lockers and install kits are available for 1999-2007 Chevy Silverado and GMC Sierra 1500 Series Trucks with GM 8.25" IFS front axles and GM 8.6" or GM 9.5" rear axles.

Front Axle: GM 8.25" IFS
GM 8.25 IFS
28 Spline (IFS)
No Carrier Break
Reverse Rotation


Gears
3.08R
3.42R
3.73R
4.11R
4.56R
4.88R
5.13R
Install Kits
Master (All)
Minor (All)
Lockers
§ Not Available

§ Due to the limited strength of the GM 8.25" IFS axle housing, lockers are not recommended for this application.
Rear Axle: GM 8.6" 10-Bolt
GM 8.6
30 Spline C-Clip
2.56/2.73 Carrier Break
Standard Rotation


Gears
2.73
3.08
3.23
3.42
3.73
4.11
4.56
4.88
5.13
5.38
5.57
Install Kits
Master (99-08)*
Master (09+)*
Minor (All)
Lockers
OX Locker
ARB Air Locker
Eaton E-Locker
Eaton TrueTrac
Detroit Locker
Yukon Grizzly Locker
Spartan Locker
Full Spool
Mini Spool

* In 2009, the GM 8.6" axle was modified to use different pinion bearings and pinion seals.



Rear Axle: GM 9.5" 14-Bolt
GM 9.5
33 Spline C-Clip
No Carrier Break
Standard Rotation


Gears
3.42
3.73
4.11
4.56
4.88
5.13
5.38
Install Kits
Master (All)
Minor (All)
Lockers
ARB Air Locker
Eaton TrueTrac
Detroit Locker

(For '02-'05 Silverado trucks with Quadrasteer, contact us).


© Copyright Filthy Motorsports, DrivetrainShop.com - Do Not Copy or Reproduce Without Written Permission.



Chevy Silverado / GMC Sierra 1500 (2007-2013)

The following gears, lockers and install kits are available for 2007-2013 Chevy Silverado and GMC Sierra 1500 Series Trucks with GM 8.25" IFS front axles and GM 8.6" or GM 9.5" rear axles.

Front Axle: GM 8.25" IFS
GM 8.25 IFS
28 Spline (IFS)
No Carrier Break
Reverse Rotation


Gears
3.08R
3.42R
3.73R
4.11R
4.56R
4.88R
5.13R
Install Kits
Master (All)
Minor (All)
Lockers
§ Not Available

§ Due to the limited strength of the GM 8.25" IFS axle housing, lockers are not recommended for this application.

*In 2010, the GM 8.25" aluminum housing changed, but all of the internal parts remain the same.
Rear Axle: GM 8.6" 10-Bolt
GM 8.6
30 Spline C-Clip
2.56/2.73 Carrier Break
Standard Rotation


Gears
2.73
3.08
3.23
3.42
3.73
4.11
4.56
4.88
5.13
5.38
5.57
Install Kits
Master (07-08)*
Master (09+)*
Minor (All)
Lockers
OX Locker
ARB Air Locker
Eaton E-Locker
Eaton TrueTrac
Detroit Locker
Yukon Grizzly Locker
Spartan Locker
Full Spool
Mini Spool

* In 2009, the GM 8.6" axles was modified to use different pinion bearings and pinion seals.



Rear Axle: GM 9.5" 14-Bolt
GM 9.5
33 Spline C-Clip
No Carrier Break
Standard Rotation


Gears
3.42
3.73
4.11
4.56
4.88
5.13
5.38
Install Kits
Master (All)
Minor (All)
Lockers
ARB Air Locker
Eaton TrueTrac
Detroit Locker


© Copyright Filthy Motorsports, DrivetrainShop.com - Do Not Copy or Reproduce Without Written Permission.


Chevy Silverado / GMC Sierra 1500 (2014-2018)

The following gears, lockers and install kits are available for 2014 to 2018 Chevy Silverado and GMC Sierra 1500 Series Trucks with GM 8.25" IFS front axles and GM 8.6", GM 9.5", or GM 9.76" rear axles.

Front Axle: GM 8.25" IFS
GM 8.25 IFS
28 Spline (IFS)
No Carrier Break
Reverse Rotation


Gears
3.08R
3.42R
3.73R
4.11R
4.56R
4.88R
5.13R
Install Kits
Master (All)
Minor (All)
Lockers
§ Not Available

§ Due to the limited strength of the GM 8.25" IFS axle housing, lockers are not recommended for this application.
Rear Axle: GM 8.6" 10-Bolt
GM 8.6
30 Spline C-Clip
2.56/2.73 Carrier Break
Standard Rotation


Gears
2.73
3.08
3.23
3.42
3.73
4.11
4.56
4.88
5.13
5.38
5.57
Install Kits
Master (All)
Minor (All)
Lockers
OX Locker
ARB Air Locker
Eaton E-Locker
Eaton TrueTrac
Detroit Locker
Yukon Grizzly Locker
Spartan Locker
Full Spool
Mini Spool



Rear Axle: GM 9.5" 12-Bolt
(5.3L V8)

GM 9.5 12 Bolt
33 Spline C-Clip
3.23 / 3.42 Carrier Break
Standard Rotation


Gears
3.08
3.42
3.73
4.10
4.56
4.88
Install Kits
Master (All)
Minor (All)
Lockers



Rear Axle: GM 9.76" 12-Bolt
(6.2L V8 and/or Tow Package)

GM 9.76 12 Bolt
33 Spline C-Clip
3.23 / 3.42 Carrier Break
Standard Rotation


Gears
3.23
3.42
3.73
Install Kits
Master (All)
Minor (All)
Lockers

© Copyright Filthy Motorsports, DrivetrainShop.com - Do Not Copy or Reproduce Without Written Permission.






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