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Yukon Gear 8.5 in. & 8.6 in. Rear Axle Ring Gear and Pinion Kit - 4.88 Gears (07-18 Sierra 1500)

Market Price $337.80 You Save 12% ($38.86)
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  • Item S500851

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    Features & Details

    • Ring and Pinion Gear Set
    • Fits GM 8.5" & 8.6" differentials
    • 4.88 Ratio
    • 8.5" Ring Gear
    • 30 Spline Pinion
    • 8620 Triple Alloy Steel
    • Includes 1 year warranty
    • Fits 2007-2018 GMC Sierras
    4x4 Gear Ratio. Re-gearing your 2007-2018 GMC Sierra is intended to improve its off-road wheeling ability and restore any lost power and acceleration that invariably comes with running an oversized tire. A lower gear (higher numerical value) will increase engine RPM for any given wheel speed, thereby making available extra torque at low speed which is needed to crawl over large obstacles. A 4.88:1 ratio Yukon Gear Rear Ring and Pinion is an ideal setup for intermediate to advanced level off-roading. They provide excellent get-up-and-go and readily handle tire sizes up to 40".

    8620 Steel. Yukon Gear Ring and Pinions are made from an ultra-strong blend of chromium, molbydenum and nickel. This triple alloy is heat treated for extra durability and features helical cut teeth that provide smooth engagement and noise free operation.

    Professional Installation Required. Properly seating and aligning a rear ring and pinion requires very precise measurements with no room for error. For this reason, it is recommended to have a drivetrain specialist complete the job.

    Application. This Yukon Gear 4.88 Ring and Pinion Gear Set is specifically designed for all 2007-2018 GMC Sierras equipped with an 8.5" or 8.6" rear differential.

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

    MPN# YG GM8.5-488

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Ring Gear
    • (1) Pinion Gear
    Installation Info

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          Customer Reviews (1) Write a Review

          Overall Rating 5

          out of 5 stars

          Installation Time:Afternoon

          • 5/5

            Installation Time: Afternoon

            October 13, 2018

            Solid Gears

            Excellent set of gears. Provided you have all the necessary tools, you can change your gears in your driveway easy. Local shop wanted $1600 for just the rear gears (double that if you have a 4x4). $300 and a solid Youtube video later, I have all the power that I lost when I upgraded to 35 inch tires, and then some. The Yukons make a little more noise than the manufacturer gears, but they're like half the price, so I thought that was a fair trade, plus when I upgrade my exhaust, it'll cover it.


            Year: 2007 Engine: 4.8L V8

            Helpful (7)

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