Skip to Content
Shop

T-4R-03-K5-HWK

T-4R-03-K5-HWK

55.00 55.0 USD 55.00

55.00

Not Available For Sale

More ways to pay ▾

100% bolt-on no welding Expert Support 100K+ Community
ADD TO CART →
https://jerdev.core4x4.com/web/image/product.template/24806/image_1920?unique=1ad92e0

T-4R-03-K5-HWK

T-4R-03-K5-HWK
SKU: T-4R-03-K5-HWK

55.00 55.0 USD 55.00

55.00

Not Available For Sale

More ways to pay ▾

Select Color to see price and add to cart.

Lifetime warranty on all non-wear items United States

Made in USA Orem, Utah
Lifetime Guarantee Unconditional
10 Colors In-house powder coat
Fully Adjustable 0-6" of lift
3 X-Series Options Only Core 4x4

Product Details

Rear Lower Control Arm Hardware Kit Includes: 4 9/16” x 4” high grade bolts, 4 9/16” top lock nuts, 8 9/16” flat washers Rear Upper Control Arm Hardware Kit Includes: 4 12mm x 80mm high grade bolts, 4 12mm top lock nuts, 8 12mm flat washers Rear Track Bar Hardware Kit Includes: 2 9/16” x 3.5” high grade bolts, 2 9/16” top lock nuts, 4 9/16” flat washers
Google

Reviews of Core 4x4

See all on Google
4.8
161 reviews
5
97%
4
2%
3
0%
2
1%
1
0%
SG
Sal Giordano Sep 24, 2025
Google
I want to take the time to share my experience with Core 4x4. I have a 2004 Jeep Wrangler and was looking to upgrade some suspension parts. I went with Core 4x4 upper & lower adjustable control arms and a front adjustable track bar. Everything arrived quickly, and right out of the box I was impressed with the quality and craftsmanship. I had a few questions during installation (measurements and torque specs), and I spoke with Korby on a couple of occasions. Not only did he send me detailed instructions, but he also shared an installation video specific to the part and vehicle I was working on, something you don’t get from many companies. The control arms fit perfectly, look great, and perform exactly as I hoped. I did run into an issue with the front track bar touching the front diff. When I reached out, Korby had me send pictures and then immediately offered two solutions: his bar guy could make a different bend and send it out to me, or I could get a full refund. His response honestly blew me away. As much as I wanted to run the Core 4x4 track bar, I chose the refund. Korby sent me a prepaid shipping label right away, no hassle. My experience with Core 4x4 has been excellent. Korby was extremely understanding, communicative, and helpful every step of the way. The parts I received were high quality, and the customer service was second to none. I would absolutely recommend Core 4x4 10 out of 10 times and will be using them again. Just a great American company with awesome people who truly care about their customers. Thank you Korby, and thank you Core 4x4!
CW
Cody Whitlock Sep 24, 2025
Google
10/10 overall experience, shipping, customer service, and such a great product!
Review photo 1
SC
Singer Heating and Cooling Mar 25, 2018
Google
These guys are great. You can get them on the phone for support. This important and is not always the case with other custom parts builders. Their control arms are bomb proof and offer plenty of options. You can get real genuine Currie Johnny joints without paying the price for Currie arms.
RH
Rex Hodges Jun 26, 2025
Google
After ordering an upper and lower adjustable control arm kit manufactured by CORE 4X4 from a jeep parts distributor who's intials are E.T., they came with 3 of the threaded ends missing. After over 2 months of phone calls and emails to this E.T. company nothing was resolved. I finally decided to call CORE 4X4 myself and tell them my dilemma. I spoke with a very personable and professional gentleman named Korby, who is one of CORE 4X4's representatives, after a brief discussion of what I went thru he simply asked me for a picture and some measurements and the items I was missing and asked if I could cover ONLY the cost of shipping and I had my missing parts in exactly 1 weeks time. This company not only builds all it's parts in the U.S.A., they stand behind their products with great customer service and life time warranty. My experience with this company and their Rep Korby was fantastic. I would definitely recommend CORE 4X4 to anyone who needs parts for any 4x4 projects. You just can't beat their quality and service. Rex Hodges Valparaiso, Indiana
EG
Erica Grissom May 27, 2025
Google
First off, I wish I knew about them sooner. The customer service is top tier. The response time is about 30 min no waiting 1-3 days to get a response. The parts are heavy-duty and look amazing. The packaging is perfect, I can't wait to hit some trails. Thanks Core4x4
ZA
Zen Asher Mar 23, 2025
Google
The quality and durability of the arms are the best. They are super heavy duty. And lifetime warranty is crazy
MH
mark hinz Mar 2, 2026
Google
Went above and beyond to get the parts we needed to complete our customers build for Moab Easter safari cant thank you enough for all your hard work and efforts Thank you and look forward to working with you in the near future
J
Justin Mar 24, 2021
Google
Small business, family owned, made in the USA, lifetime warranty. Purchased Tier 3 control arms and rear track bar for a 2006 Jeep LJ. Simple website and easy to contact over phone and email. I had some technical questions and they were happy to answer them. They allow local pickup and were built to order same week. The order was wrapped and ready when I walked in and even gave a tour of the shop. They abrasive blast all raw materials to achieve a better surface profile for powdercoat to adhere and create a smooth, durable finish. I also noticed several CNC machines and a robotic welder they use for all their parts. A small outfit with a robotic welder? Their concern for quality is obvious and it shows in the parts they make. Very impressed. Happy to do business with these guys.
Review photo 1
BZ
Brandon Zeiders Dec 23, 2025
Google
I ordered the jeep xj long arm lift kit. Control arms showed up first they turned out amazing!! Had some issues with the powder coating on the cross member and sent korby and the team at core4x4 an email. They got right on making me another cross member and sending it out. I appreciate all the help they've given me along the way. Very fast response thru emails. Build quality seems to be pretty dang nice!! Can't wait to install it and enjoy it!
D
DSI Jul 26, 2025
Google
Great products with excellent customer service after the sale
No vehicle selected

Add your vehicle and we'll only show parts that fit it.

Add your vehicle Browse all vehicles
Shop parts
Pick your series in 30 seconds.
Find My Series →
30-second quiz
Shop by Vehicle
Loading…
STEERING
Choose a vehicle to confirm fit
Steering Drag links · Tie rods · Pitman arms · Stabilizers 117
DRIVETRAIN
Choose a vehicle to confirm fit
Drivetrain Axles · Gearing · Driveshafts 1
Made in Orem, UT · Lifetime warranty
(801) 850-2920