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Jeep Wrangler JK / JKU 07-18 Full Bump Stop Extension Kit

SKU: J-JK-C-BSK
Fits: 2007 - 2018 Jeep Wrangler JK / JKU Add vehicle

125.95 125.95 USD 125.95

125.95

Starting at $110/mo or 0% APR with . See if you qualify

Build Your Kit

  • Vehicle
    Confirm this matches your vehicle. Use Shop by Vehicle to filter correctly.
  • Brand
  • Color
    Powder coat color for control arms and track bars. Does not affect performance.
  • Bump Stops
  • Front Bump Stop Extensions
  • Rear Bump Stop Extensions
  • Note to Core4x4:

Select Color to see price and add to cart.

4–8 hr install Moderate Alignment recommended Lifetime warranty on all non-wear items Made In USA

Essential Protection for Your Lifted Jeep

Upgrading your 2007-2018 Jeep Wrangler JK/JKU with increased suspension flex and lift? Ensure your rig is protected from over-compression damage with CORE 4X4 Full Bump Stop Extensions (J-JK-C-BSK). Factory bump stops become inadequate as lift height increases, which can lead to tire-to-fender contact, frame stress, and component damage. These extensions correct bump stop engagement, preventing costly issues while maintaining optimal suspension travel.

What's Included?

  • Front Bump Stop Extensions – 6061 T6 Aluminum
  • Rear Bump Stop Extensions – 3/16” Steel
  • All Necessary Hardware for Installation

Key Features and Benefits

  • Prevents Over-compression Protects Components – Properly limits suspension travel to prevent tire contact, fender damage, and excessive stress on suspension components.
  • Premium Construction for Maximum Durability – Front extensions crafted from lightweight, high-strength 6061 T6 Aluminum for corrosion resistance and longevity. Rear extensions made from heavy-duty 3/16” steel, ensuring maximum strength in extreme conditions.
  • Offset Design for Improved Alignment – Unlike traditional puck-style extensions, our offset design maintains correct bump stop alignment, ensuring even load distribution and reducing stress on the mounts.
  • Straightforward Installation – Rear installation is simple bolt-on, utilizing existing bump stop mounts. Front installation requires removing coil springs and factory rubber bump stops, then bolting the extensions in place before reinstalling.

Precision Fit for Any Suspension Setup

Our bump stop extensions come in a range of sizes to accommodate various lift heights and suspension setups, ensuring proper suspension function without sacrificing performance.

Two-Stage Powder Coating for Maximum Durability

Every component undergoes a zinc primer base coat for corrosion resistance, followed by a top coat available in 10 colors, allowing you to customize your Jeep while protecting against rust and wear.

Proudly Made in the USA

Manufactured at our Orem, UT facility, we maintain strict quality control and support local suppliers, ensuring rugged durability and premium craftsmanship.

In Conclusion

CORE 4X4 Full Bump Stop Extensions (J-JK-C-BSK) are a must-have upgrade for lifted 2007-2018 Jeep Wrangler JK/JKU models, offering essential suspension protection, superior durability, and easy installation. Keep your rig trail-ready and protected—upgrade today and drive with confidence!


Make Model Submodel Years
Jeep Wrangler 2007 - 2018

Vehicle Jeep Wrangler JK / JKU (07–18)
Brand CORE 4X4
Color Black or Blue or Charcoal or Green or Light Green or Orange or Purple or Red or White or Yellow or Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed.
Bump Stops None or New Bump Stop Rubber Pads (Available For Front Only - Not Pictured)
Front Bump Stop Extensions 2" or 3" or 4"
Rear Bump Stop Extensions 3" or 4"

See It Installed

Install videos and build guides on our YouTube channel.

Watch more installs on YouTube
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Reviews from Google

See all on Google
5.0
132 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
AP
Ajay Paynter Mar 4, 2026
Google
Great company, who worked with me on shipping parts to arrive in time for a show. When I explained my concern they went above and beyond to make it happen. Quality of the parts is top notch.
RC
Ryan Colligan Mar 4, 2026
Google
I have nothing but good things to say about Core 4x4. I have the crawler series on my JKU and we take it all over the place. These parts handle everything we throw at them.
MT
Marcus Torres Jan 15, 2026
Google
Best control arms I have installed on any of my builds. After running every major manufacturer, Core 4x4 is on par or better than all the high-end companies at a fraction of the cost. Lifetime warranty is the cherry on top.
GC
Grant Chaisson Jun 26, 2025
Google
These guys are awesome!! They have helped me build multiple jeeps from zjs to mjs and now with my lj build they all ways impress. There products are the best on the market in my eyes. The best part about it all is it's all made right here in american and shipped anywhere in the world 🌎 . Don't think twice when your looking for control arm or lift kits for your vehicle if these guys sell it BUY IT!!!
FS
Fernando Salazar Aug 25, 2025
Google
Great quality control arms and great customer service. Korby has been a great help at answering my questions on some issues I’ve been having with installation!
JG
James Griffin Jul 26, 2025
Google
Customer service is top notch. They answered all of my questions and got me my tracking number for my packages. I just received both of them and the quality is next level. You guys are truly awesome.
MT
Mike T Nov 23, 2025
Google
Korby and the rest of the team at Core 4x4 know there stuff and answered my question in a timely manner. They even were able to quick ship a re-build kit for me so I could get my truck back on the road- Thanks!
OK
oleg k Nov 23, 2025
Google
I recently ordered a set of control arms from Core 4x4, and the entire experience was absolutely top-notch from start to finish. The ordering process was smooth, the parts arrived quickly, and the control arms themselves are extremely high quality—solid construction, great finish, and clearly built to last. I also want to give a special shout-out to Korby, the guy I spoke with during the process. His customer service was amazing. He went above and beyond to make sure I got exactly what I needed, answered all my questions, and made the whole experience stress-free. You don’t see service like that very often these days. If you’re looking for high-quality suspension components backed by truly exceptional customer service, I highly recommend Core 4x4. I’ll definitely be buying from them again.
VK
Victor Keele Sep 24, 2025
Google
Great customer service. I got my front upper and lower control arms and hardware on Friday afternoon. It didn’t come with instructions so I called Core 4X4 and they immediately e mailed me the instructions. Also, the kit I got had the spacers missing so I called. It was late Friday by thus time but they took care of the issue first thing Monday morning and I got the spacers on Tuesday. Great company.
L
luke Mar 24, 2021
Google
Excellent quality product and service. My l lower control arms broke and within the same day core 4x4 hooked me up with tier 2 arms and with the color I wanted. My Jeep rides better and has been solid for several months so far. 10/10 would recommend their products to anyone.
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