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Yukon Gear Grizzly Locker Front Dana 30 - 27 spline 3.73 & Higher (07-18 Jeep Wrangler JK)

Item J103770
Market Price $757.79 You Save 13% ($98.84)
Our Price

$658.95 (kit)

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    Features & Details

    • 100% Power to Both Tires
    • Patent Pending Design Reduces Failures
    • 8620 Alloy Steel Internals
    • For 3.73 and Up Gear Ratios Only
    • Assembled in the USA
    • For 27 Spline, Dana 30 Front Axles
    • Include 1 Locker
    • Fits 2007-2018 Jeep Wrangler JK Models
    Locking Power. Improve off road performance with the Yukon Gear Grizzly Locker for your JK's Dana 30. This Locker features a patent pending design that reduces the risk of failure commonly found with locker use for superior performance. It provides 100% locking power and is easily disengaged for open traction on road or when you need it.

    Extreme Construction. This Wrangler locker is proudly assembled in the USA and features 8620 alloy steel internals for extreme strength. It comes backed with Yukon's 2 year replacement warranty that will provide up to $2,000 in collateral damages. Some exclusions apply, please see manufacturer warranty for full details.

    Application. This Yukon Gear Grizzly Locker is designed for use in 27 spline, Dana 30 front axles found on 2007-2018 Jeep Wrangler non-Rubicon JK Unlimited models. Please note: This locker is sold individually.

    Fitment: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Details

    MPN# YGLD30-4-27

    CA Residents: WARNING: Cancer and Reproductive Harm -

    Installation Info
    Tech Specs

      Customer Photos

        Questions & Answers (5)

        5 Top Rated Questions

        How does this locker engage? do you need an air system?

        • this is an automatic locker, not an air actuated.

        Helpful (2) Show 1 more answer

        what makes this locker engage ?

        • this is an automatic locker, not an air actuated.

        Helpful (0)

        What more do I need if anything?

        • The Yukon Gear Grizzly Locker Front Dana 30 can reuse your existing gears, as long as they are a 3.73 ratio or higher. You will need new bearings and an install kit to install this with the existing or new gears.

        Helpful (0)

        Is this a full time locker or can it be disengaged?

        • Hello, this locker can be disengaged.

        Helpful (0)

        How does the Grizzly locker differ from the Spartan locker?

        • The Yukon Grizzly locker is a full carrier locker where as the Spartan locker only replaces the spider gears in your open differential. The spartan is only as strong as the carrier and x/pin. where as the Grizzly locker is a forged case and 8620 internals. Also the Grizzly locker Comes with Yukon's Best Warranty in the Business, 1 year replacement of part and up to $2,000 in collateral damage

        Helpful (0)
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          Customer Reviews (3) Write a Review

          Overall Rating 5

          out of 5 stars

          Installation Time:Weekend

          Installation Cost:$100-$250

          • Performance Gain 5 5
          • Fit 5 5
          • Bang For Your Buck 5 5

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            February 06, 2019

            Locker Up

            Had these installed in the front an they work great.


            Year: 2018Submodel: Wrangler

            Helpful (1)

          • 5/5

            Installation Time: Full Day

            October 03, 2017

            Auto lockers

            Highly recommended for snow and mud. Great on road and off road performance!!


            Year: 2015Submodel: Wrangler

            Helpful (11)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            March 28, 2016

            No worries

            Had this installed in the front Dana 30 of my Wrangler. It is completely unnoticeable on the street, daily commutes. Off road, locks up and gets me over anything I need to get over. The trails I'm on mostly offer mud/tree limbs as obstacles, not much rock crawling. The shop that installed mine specializes in Yukon products and said this was a great choice for a front axle. I got a great deal from Extreme Terrain and the shop had no problems with me bringing it in for install even if I got it somewhere else. If you're on a budget and can't afford a selectable locker this is a great option.


            Year: 2015Submodel: WranglerChannahon, Illinois

            Helpful (16)

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