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ARB RD111 vs RD121 (2nd gen FRONT air locker)

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Old 01-01-2015, 07:39 AM   #1
xaqori [OP] xaqori is offline
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ARB RD111 vs RD121 (2nd gen FRONT air locker)

It is almost impossible to find 4.88 gears for the RD111...They require short gears. Almost all 4.88 gears you get now are made taller to fit the RD121 to be a more "universal" type fit. The gearing description for the lockers - like the 3.91+ for the RD111 or the 3.73- for the RD121 - is not completely accurate. The main gear manufacturers have just adapted the 3.91+ gears to fit the RD121 and stopped making the gears for the RD111. SEE ATTACHMENT OF SCREENCAP FROM ECGS'S WEBSITE. Both that are "$50" are made for the 3.73- carrier (locker)

The one on the right is stock. The one on the left is what's supposed to be fitting in the exact same space (hint: it won't)



If you make the same mistake that I did and are trying to source 4.88 gears, the gear part number from ECGS is T8CS-488R-NG. They are no longer made. Good luck...
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ARB RD111 vs RD121 (2nd gen FRONT air locker)-gears.png  
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Old 01-01-2015, 10:18 PM   #2
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Good info! Will definately keep this in mind when I order my lockers/4.88's
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Old 02-10-2015, 07:37 PM   #3
          
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Yeah, this is critical info.
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