Belltech 6401 Shackle Kit

The Belltech 6401 shackle kit works great, but does need a few supporting mods in my opinion. I installed the kit on a 2018 Sierra RCSB and experienced a vibration from 20 to 30 mph range. You're probably going to need the Belltech 4975 2-degree shim kit if installing on a RCSB. You won't use the bolts in the kit, just slide the shims in from the front of the leaf spring pack making sure the large end of the shim is to the rear. This immediately solved my vibration. The ride was greatly improved by adding shock extension/relocators. (see pics). Last but certainly not least, you will need to readjust your headlights down. On my 2018 truck, (4) clockwise turns on each of the headlight adjusters put the beams back to the stock height.I forgot to mention that unbolting the six bolts that hold the bed to the frame, and raising it, is much easier than trying to fold the bed crease when installing the shackles.UPDATE (12-28-20): 19k miles on this setup and everything working perfect.

I have never liked the rear end jacked up, as all stock pickups are built. I did some research and ended up here chosing the right lowering shackles for my 2008 Silverado 1500 LT. Before starting, I measured from the floor to the bottom of the wheel well and the rear was 3 inches higher than the front. This Belltech kit lowered the rear 3 inches, making my Chevy ride level, and handle like a sports car. It takes curves like it is on rails. I am 60 years old, and I installed it in 2 hours, following the great instructions provided. I have only praise for the folks at Belltech that made the job easier. They even had clear pictures of before and after. The only reason it took so long was that I had to lower the factory installed trailer hitch, for clearance to remove the lower shackle bolt. I would sugggest this kit to anyone that wants their truck to handle better.

My truck looked crazy with the back end so high in the air but worst of all trying to get in and out of the bed was like climbing a tree. I thought I'll try this first and add something else later if it's not enough. It took 2 of of us with an impact wrench 2 hours. Not bad. On a 2008 Silverado regular cab short bed you need to remove the leaf spring u-bolts to get the top shackle bolt out. And the u-bolts need to come out to remove the spacers anyway. Then cut the shackle bolts shorter so you can put them back in the reverse direction. It makes it easier to get them in and out. Clean the u-bolts off good so the nuts won't jam up. Rear end came down three inches over the axle as promised and it looks great. The front wheel wells have a 5 inch gap and the rear wheel wells have a 6 inch gap. Perfect. You'll notice right away how much easier is is to get in and out of the front and rear of vehicle. Trailer hitch is lower. I have to measure the difference. You can't stand under the spare tire anymore. You'll need to get on your knees to get it back. Excellent product. Excellent price.Post review. The truck rides smoother now. When you go over bumps the rear does not bounce. I think the shocks are more at their mid range and not fully extended.

Very nice quality. I installed this on my 2011 silverado 2wd max trailering package 6.2l. I started with 36 1/2" up front rear was 39 3/4. Finished with 37" on all four corners. Very pleased with the look of the level truck. It went on relatively easy except for the top shackle bolts. You need remove the trailer hitch for the bottom bolts and for the top bolts you need to fold over the bed seam or loosen the bed from the truck to raise the shackle high enough to remove the top bolt. The loosening of ubolts for lift block removal was easier than i thought. spacers were really easy to install and tighten leaf springs back up. Looking good though.

Lowered the back end of my 2010 GMC Sierra 2 inched with these shackles. Looks good now, not as much rake as from the factory. I think the bushings are decent quality, which was my only worry when purchasing. I don't want any squeaks...I installed them about a month ago, and so far, so good.

These are perfect. I installed these and removed my stock leaf block in my 09 Silverado. Total drop of 3 inches. Sits dead level now. Had a semi tough time installing them, but that was because of a few hiccups on my end with tools and a spare tire removal problem. Nothing to do with the product. Came with instructions and two stickers. Follow the safety instructions!! You need two quality jack stands and a quality jack to support the suspension. Block off the front tires on both sides. Wear eye protection. Lots of videos on youtube on how to do this install