This kit includes 2 components, each built and powder-coated in-house.
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.
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.
Vehicle Fitment: Jeep Wrangler JK/JKU 07-18 – Protects against over-compression damage, preventing tire contact, frame stress, and component damage when lifting or increasing suspension flex.
CORE Advantage: Corrects bump stop engagement to prevent costly damage from over-compression. Ensures optimal suspension travel, keeping components safe and maintaining suspension integrity on rough terrain.
Multiple Sizes Available: Designed for easy integration with various suspension setups, these extensions provide precise bump stop engagement for lifts of all sizes, preventing overextension and ensuring smooth suspension cycling.
Construction: Front extensions crafted from high-strength 6061 T6 aluminum for corrosion resistance and lightweight durability. Rear extensions made from heavy-duty 3/16” steel for maximum strength in demanding conditions.
Two-Stage Powder Coating: Zinc primer base and top coat available in 10 vibrant colors protect against corrosion and allow for personalized styling of your rig.
Warranty and Origin: Proudly manufactured in the United States, our product includes a lifetime warranty on all non-wear items, providing you with confidence and peace of mind in your purchase.
Built With
Front Bump Stops machined from 2.5” 7075 Aluminum. Rear Bump Stops laser cut from 4” x 3” Rectangle 3/16” Wall Tube.
| Make | Model | Submodel | Years |
|---|---|---|---|
| Jeep | Wrangler | 2007 - 2018 |
Construction & Materials
Front Bump Stops machined from 2.5” 7075 Aluminum.
Rear Bump Stops laser cut from 4” x 3” Rectangle 3/16” Wall Tube.
| 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" |
| Placement on Vehicle | Rear |
| Mounting Style | Bolt-On |
Use the vehicle selector on our website to shop by your year, make, and model. On product pages, use the kit builder to select your color, series, lift height, and any add-on options, then add to cart. If you need help, call or email our team.
Standard orders typically ship within 1–3 business days of ordering. Custom color orders take approximately 5–10 business days. Because everything is built in-house, we can turn orders quickly even for custom specifications.
You can reach our team through the contact form on our website, or browse to the Contact Us page. Our team is available to answer pre-sale and technical questions before and after your purchase.
Reviews of Core 4x4
Specifications
| Color | Black, Blue, Charcoal, Green, Light Green, Orange, Purple, Red, White, Yellow, Custom Color - Other than what is listed above. Extra charge varies. We will reach out after order is placed. |
| Bump Stops | None, New Bump Stop Rubber Pads (Available For Front Only - Not Pictured) |
| Front Bump Stop Extensions | 2", 3", 4" |
| Rear Bump Stop Extensions | 3", 4" |
| Vehicle | Jeep Wrangler JK / JKU (07–18) |
| Brand | CORE 4X4 |
| Note to Core4x4: | - |
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