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Sierra Gear Performance Chromoly Upgrades
PERFORMANCE FRONT AXLE SHAFTS

Chromoly Front Axle Shafts from Sierra Gear & Axle are designed for high performance use.

For our Chromoly Front axle shafts, we use 4340 Chromoly steel, which has been hardened to maximize the strength and ductility of the axle shafts. Stock axle shafts are typically made from 1040 and 1541 steel and are perfectly adequate for stock applications.  The combination of superior materials and advanced manufacturing processes make Sierra Gear Chromoly axle front shafts far stronger and more durable than standard stock axles. Our Performance Chromoly Front axle shafts are available for Jeep, Ford, GM and Dodge applications and are backed by our 10 Year Limited Warranty.

For a listing of stock replacement axle shafts for Jeep, visit our Jeep Stock Replacement Axles page.

Get the job done right with one of our Axle Bearing and Seal Kits featuring OEM components from manufacturers like Timken, Koyo, National and Spicer

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Application Chart:

Performance & Chromoly Axle Shaft Application Chart.

 

FRONT AXLES – CHROMOLY – For use with DANA 30™ Axles
YEAR APPLICATION SPLINE LENGTH SIDE SIERRA #
72-81 CJ5 / CJ7 Narrow Kit 27 Kit Both SA 12139
72-81 CJ5 CJ7 Inner 27 14.14” R SA 10209
72-81 CJ5 CJ7 Inner 27 27.02” L SA 10220
72-81 CJ5 / CJ7 Narrow Kit 30 Kit Both SA 12129
72-81 CJ5 CJ7 Inner 30 14.14” R SA 10109
72-81 CJ5 CJ7 Inner 30 27.02” L SA 10120
82-86 CJ7 Wide Kit 27 Kit Both SA 12142
82-86 CJ7 Inner 27 15.82” R SA 10210
82-86 CJ7 Inner 27 28.69” L SA 10221
82-86 CJ7 Wide Kit 30 Kit Both SA 12130
82-86 CJ7 Inner 30 15.82” R SA 10110
82-86 CJ7 Inner 30 28.69” L SA 10121
72-86 CJ Outer 27 8.72” B SA 10128
87-96 YJ Non-Disconnect Kit 27 Kit Both SA 12145
97-06 TJ Kit 27 Kit Both SA 12148
87-06 TJ/YJ/XJ Inner Non-Disconnect 27 32.36” R SA 10113
87-06 TJ/YJ/XJ Inner 27 16.61” L SA 10124
87-96 YJ/XJ Non-Disconnect Super Kit 30 Kit Both SA 12131
97-06 TJ  Kit 30/27 Kit Both SA 12132
87-06 TJ/YJ/XJ Inner Non-Disconnect 30 32.31” R SA 10129
87-06 TJ/YJ/XJ Inner 30 16.50” L SA 10130
87-06 TJ/YJ/XJ Outer 27 6.11” B SA 10104
97-06 TJ Super 30 Kit 30/30 Kit Both SA SUPERD30TJ-30
07-18 JK Non-Rubicon Kit 27 Kit Both SA 12152
07-18 JK Inner (1310) 27 34.44” R SA 10136
07-18 JK Inner (1310) 27 18.75” L SA 10137
07-18 JK Outer (1310) 32 6.32” B SA 10141
FRONT AXLES – CHROMOLY –  – For use with DANA 44™ Axles
YEAR APPLICATION SPLINE LENGTH SIDE SIERRA #
68-79 Ford 1/2 Ton Kit 30 Kit Both SA 12175
68-79 Ford 1/2 Ton Inner 30 33.90” R SA 10107
68-79 Ford 1/2 Ton 3/4 Ton Inner 30 18.90” L SA 10118
68-79 Ford ¾ Ton Inner 30 34.75” R SA 10134
68-79 Ford ¾ Ton Inner 30 18.63” L SA 10135
76-77 Ford ¾ Ton Outer 19 10.66” B SA 38817
71-77 Ford Bronco Kit 30 Kit Both SA 12177
71-77 Ford Bronco Inner 30 27.94” R SA 10106
71-77 Ford Bronco Inner 30 18.31” L SA 10105
78-79 Ford Bronco Kit 30 Kit Both SA 12175
78-79 Ford Bronco Inner 30 33.90” R SA 10107
78-79 Ford Bronco Inner 30 18.90” L SA 10118
68-79 Ford Outer 19 9.72” B SA 10126
69-80 GM Kit 30 Kit Both SA 12172
69-80 GM Inner 30 18.31” R SA 10105
69-80 GM Inner 30 36.12” L SA 10116
69-80 GM Outer 19 9.92” B SA 10127
74-79 Wagoneer Kit – Drum 30 Kit Both SA 12171
74-79 Wagoneer Inner 30 14.69” R SA 10111
74-79 Wagoneer Inner 30 33.19” L SA 10122
74-79 Wagoneer Drum Outer 19 9.72” B SA 10126
74-92 Wagoneer Disc Outer 19 9.92” B SA 10127
80-92 Wagoneer Kit 30 Kit Both SA 12174
80-92 Wagoneer Inner 30 15.80” L SA 10112
80-92 Wagoneer Inner 30 32.12” R SA 10123
03-06 TJ Rubicon Kit 30 Kit Both SA 12165
03-06 TJ Rubicon Inner 30 31.85” R SA 10114
03-06 TJ Rubicon Inner 30 16.62” L SA 10125
03-06 TJ Rubicon Outer 27 6.11” B SA 10104
07-18 JK Rubicon Kit 30 Kit Both SA 12155
07-18 JK Rubicon Inner 30 33.50” R SA 10139
07-18 JK Rubicon Inner 30 19.76” L SA 10138
07-18 JK Rubicon Outer 32 6.25” B SA 10140
71-80 Scout II Inner 30 14.69” R SA 10111
71-80 Scout II Inner 30 32.91” L SA 10119
71-80 Jeep CJ / Scout II Outer 27 8.72” B SA 10128
N/A Blank Inner None 22.00” SA 10440
N/A Blank Inner None 39.00” SA 10441
FRONT AXLES – CHROMOLY – For use with DANA 50™ Axles
YEAR APPLICATION SPLINE LENGTH SIDE SIERRA #
99-04 Ford Outer 35 9.39” B SA 10652
FRONT AXLES – CHROMOLY – For use with DANA 60™ Axles
YEAR APPLICATION SPLINE LENGTH SIDE SIERRA #
75-93 Dodge Inner 35 15.98” R SA 10662
75-93 Dodge Inner 35 35.08” L SA 10661
93-Dn Dodge Outer 35 12.00” B SA 10650
78-79 Ford Kit 35 Kit Both SA 12178
78-79 Ford Inner 35 34.56” R SA 10664
78-79 Ford Inner 35 18.68” L SA 10663
85-98 Ford Kit 35 Kit Both SA 12179
85-98 Ford Inner 35 36.68” R SA 10665
85-98 Ford Inner 35 15.97” L SA 10662
78-98 Ford Outer 35 11.40” B SA 10651
99-04 Ford Outer 35 9.39” B SA 10652
77-91 GM Kit 35 Kit Both SA 12180
77-91 GM Inner 35 17.67” R SA 10660
77-91 GM Inner 35 35.08” L SA 10661
77-91 GM Outer 35 12” B SA 10650
Blank Inner None 22” SA 10600
Blank Inner None 39” SA 10601
GM 8.5” FRONT AXLES – NON-CHROMOLY
YEAR APPLICATION SPLINE LENGTH SIDE SIERRA #
79-88 Assembly 28 R SA 72747-1X
79-88 Assembly 28 L SA 72747-2X
GM 8.5” FRONT AXLES – CHROMOLY
YEAR APPLICATION SPLINE LENGTH SIDE SIERRA #
77-90 GM Kit 30 Kit Both SA 12170
77-90 GM Inner 30 19.15” R SA 10132
77-90 GM Inner 30 35.46” L SA 10115
77-90 GM Outer 19 9.92” B SA 10127

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