Add-a-Leaf kits are the perfect solution when 1.5 in. - 2.5 in. of raised height is required. This strengthens the integrity of an existing leaf spring pack, which is helpful when trying to renew the spring due to age and heavy loads.
First off - This part fits 04-08 F150 - both ProComp and 4WP need to fix their database, because even the documentation of this part says so - Guys, you are probably losing some sales because of this screwup.I have an 07 F150 FX4 Supercrew with a ProComp 6 inch lift. Like others have mentioned, after the install I wasn't sure I liked the rear height. After I put the truck's rear top on it, I really didn't like it, because the weight made the rear sag.To fix this issue, I added 2 parts: This AAL, and a Fabtech 5 inch block.The 5 inch Fabtech block replaced the factory 2 inch block and the ProComp 2.5 inch block (net result is an increase of .5 inches, but using 1 block instead of stacked blocks).This AAL helped support the load, and raised the back up a little (maybe an inch to 1.5 inches).So after [$] (including parts and install), the lift looks right, with the rear raised slightly above the front (a little more like the stock rake).The ride feels fine, I don't know what other reviewers meant about a stiffer ride. This truck is actually much smooth than stock with all of the ProComp parts.
By minusmojo from Jacksonville, FL
Added a three inch level to the front causing the California look which I hated. The add-a-leaf raised the rear back above the front giving it the factory look with more clearance. Great part.
By Jhnyreb from Kailua, HI
Good fix for a saggy rear end
This was the perfect fix for the rear end of my truck after I put the front spacers in it, I run 33 inch tires but have more than enough room for 35 inch.
By Mile High Ron from Golden, Colorado
Cheap and Effective!
Love the AAl. Does its job and adds some load capacity
By T-Dawg from Lompoc,CA
Not so great
The Good: This product takes care of the prerunner look on a 6" procomp lifted f-150. Adds a bit of room for tongue weight at max capacity.
The Bad: Stiff as heck, Cannot get right length (travel) shocks without special make, increases cost exponentially. If I had researched more thouroughly prior to purchase I would have chosen the Fabtech lift since they use the correct size rear blocks for my purposes.
By standish from san clemente,ca
Way overpriced on labor, will gouge your eyes out. [...]
By straight shooter from Colorado Springs, CO
good fit but need u bolts the factory are little too short for me
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