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Mammoth Boulder Beadlock Style Black Wheel; 17x9 (18-20 Jeep Wrangler JL)

Item J100635-JL
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Market Price $180.99 You Save 17% ($31.00)
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$149.99 (each)

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2018-2020 Wrangler JL

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Ship to: Ashburn - 20149
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      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Aggressive Five Spoke Styling
      • Matte Black Finish
      • Polished Simulated Beadlock Lip
      • One Piece Aluminum Construction
      • Hub Centric Design
      • Wheel Size: 17 x 9 - Front or Rear
      • Bolt Pattern: 5 x 5 (5 x 127mm)
      • Offset: -6mm, Backspacing: 4.7-inches
      • Sold Individually
      • Fits 2018-2020 Jeep Wrangler JL Models


      Aggressive Styling. Upgrade your Jeep Wrangler with the Mammoth 4x4 Boulder Beadlock Style Black Wheel from ExtremeTerrain. This Mammoth 4x4 wheel features classic, 5-spoke styling with an aggressive spin, made to take on the trail. Specific to your Wrangler, it features a hub-centric design to provide the reliability you need on the highway or off the paved path for a bold look, no matter where your tire tracks end.

      Aluminum Construction. Cast from aluminum, this wheel features a 1-piece design for superior strength without extra weight. Made to accommodate the variety of tasks your Wrangler takes on, this wheel's load capacity is 1,521 pounds.

      Matte Finish. Completed in a durable, matte black powder coat for a rugged off road appearance, this Mammoth 4x4 features a polished lip with simulated bead locks to create a bold off road appearance. It comes complete with a matching Mammoth 4x4 center cap for complete aggressive styling, whether you're on the trail or cruising the highway.

      Application. This 17x9 Mammoth 4x4 Boulder Beadlock Style Black Wheel (-6mm offset) fits all 2018-2020 Jeep Wrangler JL models, including Unlimited and Rubicon models. Sold individually.

      Mammoth 4x4

      Fitment: 2018 2019 2020

      Mammoth J100635-JL

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (44)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 44 customers

      • May 13, 2020

        Review shared from Mammoth Boulder Beadlock Style Black Wheel - 17x9 (07-18 Jeep Wrangler JK)

        5 2018 Wrangler - ufmatt

        Good price and good product

        Good looking wheels, super fast delivery. Arrived 2 days after ordering.

        Helpful (0)
      • March 06, 2020

        Review shared from Mammoth Boulder Beadlock Style Black Wheel - 17x9 (07-18 Jeep Wrangler JK)

        5 2011 Wrangler - JAdams

        Big Difference

        Looking for new wheels can be hard when you only see a picture. So, even after I bought these I was just not sure how they would look on my jeep. I was not disappointed when I saw them in person for the first time. There were no issues with finish or appearance when they arrived. Each was packaged nicely.

        Helpful (0)
      • December 09, 2019

        Review shared from Mammoth Boulder Beadlock Style Black Wheel - 17x9 (07-18 Jeep Wrangler JK)

        4 2017 Wrangler - John

        The Moose

        looks amazing all i can is just do it, make it happen, enjoy life.

        Helpful (2)
      • November 10, 2019

        Review shared from Mammoth Boulder Beadlock Style Black Wheel - 17x9 (07-18 Jeep Wrangler JK)

        5 2009 Wrangler - KelWoodstockGA

        Fantastic Set for Price

        Super happy with this wheels/tires set for my '09 Wrangler JK. They look amazing and my Jeep rides smoother than ever. These were exactly what I wanted for my first set of after-market tires and wheels.

        Helpful (2)
      • August 19, 2019

        Review shared from Mammoth Boulder Beadlock Style Black Wheel - 17x9 (07-18 Jeep Wrangler JK)

        5 2014 Wrangler - Danthejeepman

        Great setup

        I love the look of the faux bead lock wheels and the falken’s are a nice quite ridding and attractive tire.

        Helpful (2)
      • July 11, 2019

        5 2018 Wrangler - Mjmhomes

        Great looks

        After many reviewing many photos of different styles of wheels, I decided on the 17x9 Mammoth Boulder beadlock wheels. Very satisfied with my selection on how they look on my Jeep Wrangler JL in the Granite Crystal Metallic color. Also, my new 33 inch x 11.2 inch tires fit well on the wheels and the ride is better too.

        Helpful (2)
      • June 08, 2019

        Review shared from Mammoth Boulder Beadlock Style Black Wheel - 17x9 (07-18 Jeep Wrangler JK)

        5 2017 Wrangler - Otis

        Great look for a great price!

        The visualizer didn't do these wheels justice when I was browsing the site! They look even better in real life! The build quality is great, and I've gotten several compliments since their debut. I've only had them on for two weeks, so they haven't been off road yet, but they seem very stout and should be able to take anything the trail can throw at 'em!

        Helpful (3)
      • April 29, 2019

        Review shared from Mammoth Boulder Beadlock Style Black Wheel - 17x9 (07-18 Jeep Wrangler JK)

        5 2008 Wrangler - MichaelA

        New wheels and tires

        The look is awesome really starting too look like a far besides the wheels and tires i have an E/T 9500 WINCH ,ROCK.hard front bumper,new headlights, grab handles,and interior blue led lights

        Helpful (3)
      • April 05, 2019

        5 2018 Wrangler - Gregg G

        Love these wheels.....

        The Mammoth Boulder Beadlock wheel has a very simple design with an aggressive look. They are very easy to clean and the weight of these wheels is much lower compared to other manufacturers. In my opinion they look much better in person than some pictures show. Honestly can’t find anything negative to say about these wheels. Extremely happy with the purchase.

        Helpful (5)
      • November 21, 2018

        Review shared from Mammoth Boulder Beadlock Style Black Wheel - 17x9 (07-18 Jeep Wrangler JK)

        5 2016 Rubicon - AdamC

        Impressed and Excited

        Wheels look absolutely great. Need to wear off the current rubber before I can mount these with new tires, but the wheels were a nice birthday gift and look great in the garage. And talk about incredible fast shipping. From order to delivery was 2 days.

        Helpful (10)

      Questions & Answers (18 answers)

      5 Top Rated Questions

      Do you have a spec sheet for these wheels? Weight, offset, backspacing, etc...

      • The wheel has an backspacing of 4.7", offset of -6mm and weighs 23 lbs.

      Helpful (4)

      Will the original “Jeep” center caps fit on this wheel?

      • Unfortunately, the Mammoth wheels will only work with Mammoth center caps.

      Helpful (1)

      Can I get these with a red beadlock ring?

      • These are not offered with a red bead-lock style lip.

      Helpful (0)

      Does the beadlock ring stick up above edge of wheel to where they hold water because it can't escape?

      • No, the wheels would not retain water in that fashion.

      Helpful (0)

      Are these real beadlock wheels? Or just look like beadlock wheels?

      • The beadlock is for cosmetic purposes only, and is not functional.

      Helpful (0)
      Post Your Question
      10 More Questions
      Will the rear back up cam in the spare tire work with these? 1 answer
      How much do these weigh? 1 answer
      Will this fit my jl sport 4 door and the KO2 315 70 17 mopar 2” lift will i need wheel spacers 1 answer
      Will the factory TPMS sensor work on these rims? 1 answer
      I have a two door Wrangler JL with P245/75R17 112T tires. The current rim is 17 X 7.5. Will theses tires fit on the Mammoth Boulder Beadlock Style Wheel - 17 X 9? (Irem J100635) 1 answer
      Will this fit a 265/70/R17 121/118P 10 P.R. on a lifted TJ? 1 answer
      Is the outer ring removable? I am curious if the OMF rock rings will fit. Thanks 2 answers
      What is the actual Backspacing for this wheel? 1 answer
      What is the diameter dimensions of the center cap, both the flange and the insert? 1 answer

      Installation & What's in the Box

      What's in the Box

      • (1) Wheel
      • (1) Center Cap

      Tech Specs

      Manufacturer: Mammoth 4x4 Style: Boulder Beadlock
      Size: 16x8
      Finish: Matte Black
      Backspacing: 4.5" (114mm)
      4.7" (121mm)
      Offset: 0mm
      -6mm (-0.2")
      Load Capacity: 1521 lbs (690 kg) Bolt Pattern: 5x5"
      Weight: 21.1lbs
      23.1 lbs
      Material: Aluminum