Motive Gear GM10-390 Differential Ring and Pinion Fits GM 8.5|GM 8.625", 3.9 Ratio

Description:

About this item:

  • PERFECT FIT: Rotation: Standard; Ring Gear Outside Diameter: 8.5"; Ratio: 3.9; Pinion Gear Tooth Quantity: 10; Ring Gear Tooth Quantity: 39 **Please Note: Before purchasing, verify correct fitment for your specific vehicle application using the Amazon Confirmed Fit tool**
  • UNLEASH YOUR BEAST: Motive Gear Ring and Pinion sets are engineered for the toughest conditions, giving your differential the power and durability it needs to dominate the road, track, or trail.
  • UNRIVALED PERFORMANCE: Whether you're burning rubber on the street, conquering off-road terrain, or setting records at the track, Motive Gear ring and pinion sets deliver the high-performance, optimal spline count, and quality that serious gearheads demand.
  • CUTTING-EDGE DESIGN: Motive Gear uses the latest designs and manufacturing technologies to create gears that run quietly, with precise rotation and a strong diameter, making setup a breeze so you can spend less time in the garage and more time behind the wheel.
  • BUILT TO LAST: Every Motive Gear ring and pinion set comes with a standard one-year warranty, ensuring your vehicle is ready to roll with confidence.
  • A division of Midwest Truck and Auto Parts, Motive Gear offers the highest quality drivetrain components on the market today. With a broader line of ring and pinion gears than any other aftermarket manufacturer, Motive Gear is the number one choice for distributors world-wide. More than just ring and pinion gears and differential bearing kits, Motive Gear offers a complete line of transmission parts and transfer case parts as well as replacement axle shafts. Along with Motive Gear's performance and axle divisions; Motive Gear Performance and TEN Factory, there simply isn't a better value in drivetrain components.

    Review:

    4.5 out of 5

    90.00% of customers are satisfied

    5.0 out of 5 stars Very good

    j.c. · August 28, 2024

    Perfect thank you

    5.0 out of 5 stars Ring and Pinion

    h. · May 28, 2024

    Once properly installed the ring and pinion gear meshed exactly; Motive Gear GM10-342 Ring and Pinion (GM 8.5" & 8.6" Style, 3.42 Ratio) 27May2024

    5.0 out of 5 stars Gear set

    D.P. · June 15, 2024

    Great pricing fast shipping thanks!

    1.0 out of 5 stars NOISY

    D.S. · June 13, 2024

    If you want your rear differential to sound like Fergie singing the National Anthem these are the gears for you. If you like the challenge of reading a gear pattern that looks like an Autism puzzle piece, this set is for you! I would rather sandpaper a Tigers ass in a phone booth than install these again.

    4.0 out of 5 stars Not a 4.11

    M.D. · September 10, 2024

    Seem to be good gears but my pinion tooth count was 10 and ring gear count was 41 making these a 4.10 and not 4.11. 1 star deducted for this

    5.0 out of 5 stars Good gear set

    K. · March 28, 2021

    This is a good quality reasonably priced gear set.I installed this in my 99 square body suburban 10 bolt 8.5". The ring and pinion had previously been replaced in my truck before I got it. Unfortunately whoever installed that didn't clean out the meatal chunks from whatever bearing let loose previously and it caused the inner pinion bearing to go bad(as well as spider gears), no one cared and just kept driving it. I tried replacing the bearings and cleaning everything and just could not get a good gear contact pattern. I washed my hands of that set and bought this. Set up was nice and easy. I used a straight edge across the carrier bearing cap mounting flats with a dial caliper to measure pinion depth, then just had to adjust shims a few times for ring gear backlash, checked pattern and it was great. Put it together and for the first time since I've owned this vehicle there's finally no noise from the differential.

    5.0 out of 5 stars Very well made and QUIET gear set.

    D.Y. · December 13, 2021

    When my 1971 Nova had rear end issues, I was on the fence about which manufacturer gears I wanted to purchase and stumbled onto Motive.Yes, they are manufactured overseas but, if you or your shop follows the instructions for installation, they will be wisper quiet. Set them up to have a .007 to .009 backlash and do some light driving for 500 miles and enjoy.

    5.0 out of 5 stars Great

    B. · February 9, 2022

    I haven’t been inside of the rear end since installed a Detroit positrac locker with it to get rid of the spider gears hadn’t had to get into the rear end since no howling of you install and shim properly.

    All parts are really good

    P.I. · October 3, 2024

    My order came fast and on time. Everything fit my axle on my truck like it was supposed to. I'll definitely buy more from Bolo

    Right fit

    c. · August 29, 2024

    Fit For my 1996 chevrolet impala ss.

    Motive Gear GM10-390 Differential Ring and Pinion Fits GM 8.5|GM 8.625", 3.9 Ratio

    4.4

    BHD157679

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    Product origin: United States

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