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Pro Comp Block and U-Bolt Lift Kits
Pro Comp Suspension
Reviews
Manufacturer
Customer Reviews
Customer Images
3.7
3.7 112
101 Customer ratings
Customer Images
5.0
Good product. Simple install
As described. Quality construction. Install wasnt too difficult.
By Sean M from Portland, OR
| 4/17/23
5.0
Worth the money
Was was easy to install, definitely recommend having a floor jack and tall jack stands if you install it yourself. Great product and I love the look it gave my truck.
By Nick from Utah
| 4/14/23
5.0
Good product.
Blocks for perfect and measure properly. This was exactly what I needed for my F100.
By Matt B from Brooklyn, CT
| 3/2/23
5.0
Dope product
Good product, easy install and the guys at 4 wheel parts are knowledgeable
By Nate from Hillsboro Oregon
| 6/17/22
4.0
Great Product and Service
The team did a great job installing a Pro Comp Rear block on my truck. It took the item longer than expected to arrive, but they got the job done. They scheduled me a week out for installation and completed it by the end of business. Please be mindful of the delays, shortages, etc in the world today. They are very busy. Items will take longer to arrive. I would recommend calling to check in on the item after 2-3 weeks. The second time I called, they had just received the item.
By Hayden from Raleigh, NC
| 10/11/21
5.0
2007.5 Chevy 2500
My truck looks great and the ride hasn’t changed at all. If anything it got better.
By Scott from NV
| 5/18/20
Q & A
Question & Answers
197 Answered questionsQ: What size U bolts are needed to put this on a 2019 Colorado Z71? Are there any break line modifications needed? Answer this question
A: You may need a longer shock for the 2.5” lift as well. I found that I needed to grind off about 1/16” - 1/8” off of the centering pin for the blocks to sit flush on the axle plate. 2019 Colorado Z71
Answered by Chris B. from CO on 03/27/2021
A: 10.5” U-bolts work comfortably. The Rough Country lift kit comes with a bracket extension for the brake lines. The Zone 5.5 inch lift kit says to just bend the factory bracket down to free up the brake lines...
Answered by Chris B. from CO on 03/26/2021
A: U-bolt required for a 2.5” block: 9/16” x 2.525” x 10.25-10.50” You will need to check the slack of the brake line to see if you have enough room to use the 2.5” block.
Answered by Kelly from 4WP Corporate Headquarters on 03/23/2021
Q: Do these come with u bolts to. Answer this question
A: Just blocks. I have them and no issue
Answered by Chris from NC on 05/18/2021
A: The blocks do not come with U-bolts.
Answered by JD1986 from Justice, IL on 05/17/2021
Q: Does this include the U-bolts? Answer this question
A: No
Answered by 2723B from Ohio on 10/06/2020
A: No. No ubolts included. It only includes the blocks.
Answered by Anonymous on 10/05/2020
Q: Will this fit 2021 Silverado RST? Answer this question
A: RST will have a 9/16 pin so shouldn’t be an issue. | Rear Block; 1.5 in. Lift; 2 Aluminum Riser Blocks; Pin Size 9/16 in. | NOTES: (1) Lift blocks are for rear axle use only. Do not use lift blocks on the front of any vehicle. (2) Use of lift blocks will require use of longer u-bolts. U-bolts are sold separately.
Answered by Dave from 4WP HQ on 10/31/2022
Q: How wide are these blocks 2 1/2 inches? Answer this question
A: These are 2.25 inches wide.
Answered by Dave from 4WP HQ on 07/13/2022
Manufacturer
Pro Comp Suspension has spent the last two-and-a-half decades engineering, testing and manufacturing products that will give Jeep drivers the confidence to dominate whatever terrain is ahead. The Pro Comp Promise Life Time Warranty is forever. Pro Comp's warranty goes with the suspension products on Jeeps whether or not the Jeep owner is the person who originally purchased the product. Pro Comp Suspension can afford to give such a warranty because the products are produced at the Pro Comp facility in San Diego, California under exacting manufacturing standards. Pro Comp Suspension is the only suspension company with products that are tested under true driving conditions on outside roads, rather than simulated testing. Shop Pro Comp Suspension Now
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