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Gears

Discussion in '5th Gen 4Runners (2010-2024)' started by Braves95, Sep 7, 2020.

  1. Sep 7, 2020 at 6:16 AM
    #1
    Braves95

    Braves95 [OP] New Member

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    I have a 2019 nightshade. Was thinking of adding 4.88 and front and rear air lockers. Will this work without doing anything but just changing gears and adding the lockers? Will the center locking diff still work the same?
    Also what are the size of the OEM gears.
    Adding front and rear bumpers
    All the skids
    Kings
    May downsize to 17inch and get rid of the 20inch tires. But do I need to?
     
  2. Sep 7, 2020 at 7:48 AM
    #2
    Mtbpsych

    Mtbpsych New Member

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    Stock gearing is 3.73.
    As far as I know there should be no issues with the center locking diff. The off road comes with the rear locker from factory without additional work besides installation of the locker itself.
    If you’re going all out with those mods, I assume you’re going to do some heavy off-roading at which point I would highly suggest ditching the 20 inch wheels. They’re hideous, and you’ll greatly reduce the amount of rubber you have between the wheel and ground and have a tougher ride. Thin tires do not go mix well with rough terrain.
     
  3. Sep 7, 2020 at 8:00 AM
    #3
    Oldtoyotaguy

    Oldtoyotaguy Paid cash for it

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    Hey Braves95, these are highly specific mods, so I’m assuming you’re making them with the compromises that go with them, in mind. i.e. that gearing is pretty low, are you going for a big lift and 33s? Front lockers are great if you need them, but there’s a reason a modern 4x4 like the OR excludes them, and substitutes a traction control system instead. Front lockers really limit manoeuvrability on a trail, as you can’t turn your front wheels very much before they jam up. Any kind of backing or turning is going to take a lot of forward and back movement when they’re engaged. If you need front lockers, though, you do what has to be done. I can remember driving old 60s era trucks that had front lockers and manual steering - brutal.
    I echo what Mtbpsych says about the tires - more sidewall is preferable for airing down.
     
    Mtbpsych likes this.
  4. Sep 7, 2020 at 12:38 PM
    #4
    Braves95

    Braves95 [OP] New Member

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    Yes. 285/75/17 11 ply.
    Front locker just in case. I have the limited so I do not have a rear locker so I at least need that. 2.5 inch lift with the kings i got. Oem style with jba high caster. With click adjusters.

    I know i have the center locking diff. Would I use that more than the front locker?
     
  5. Sep 7, 2020 at 12:39 PM
    #5
    Braves95

    Braves95 [OP] New Member

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    I hade a 17 tacoma offroad with 4.88. 11 ply tire manual and man from stock to 4.88 was night and day. Drove like a dream.
     
    Oldtoyotaguy[QUOTED] likes this.
  6. Sep 7, 2020 at 3:29 PM
    #6
    Oldtoyotaguy

    Oldtoyotaguy Paid cash for it

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    Yeah, definitely with 33s. Not sure about The best set up for awd so I’ll defer to others on it. Land Rovers use that and they’re pretty good off road rigs.
     
  7. Sep 8, 2020 at 1:50 AM
    #7
    MI-FL off roader

    MI-FL off roader T4R Hobby/Addict

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    Too many mods and too much money
    I have 285/70/17 and stock gears w an ARB rear locker on my LE. The 4:88 gearing might be a little low for daily highway use but will be great for the larger tires and heavy loads or towing as you probably know from your Taco, but the center differential will work fine. The front locker might not be needed as I have used my rear locker w ATRAC, and gotten out of most situations. 4Lo w ATRAC and a rear locker is a pretty stout system that most people have decided to go with and been happy with. Unless your doing some extreme rock crawling on a regular basis, a "just in case" front locker might be money better spent on other things. But, with that said, if the front diff is already being upgraded to lower gears, then it is the perfect time to put a locker in if the money isn't a problem. The 285/75s will create a few clearance issues in the fender well. A CMC/BMC might be needed.
     

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