kylant

they will not. different shape

cognito leafs are made by deaver

they are painted, not overlays

the caps are different. you have to get non-at4x caps to match non-at4x flares. best bet would be to go aftermarket

my '26 did not. i ordered it from Helm. it's lame that they don't come with the vehicle anymore. but i would rather look in the book than in the screen

how would lowering your tire pressure void your warranty???

not arguing about travel. just stating facts. the increased travel on the ZR2 comes from the increased clearance on the UCA and the slightly taller knuckle. the arm doesn't hit the perch as soon as a standard UCA, but the travel is limited by the shock extension. it gives up 1/2" + before the UCA hits the perch

exactly

the shock limits the droop on the ZR2. the UCA was not even touching the service perch at full droop. i added a shock spacer (5/8") and now the truck has near full droop. the UCA is still about 1/16" off the perch

did some measuring. 100% stock ZR2 (other than reducing rear tire pressure) and Chevy rubber bed mat front ground to fender: 42 1/2" hub to fender: 26" full droop hub to fender: 28 1/4" droop: 2 1/4" 1 finger width gap between UCA and service perch rear ground to fender lip: 43 3/4" rake: 1 1/4"

my truck was diesel. 5600 lb torsion bars. i don't have a need for diesel other than the "cool" factor . not towing, not hauling my truck had 13.8mpg economy for the life of it. not much better than gas. gas is anywhere from .50 to $1 less a gallon here. no issues, but only a matter of time. i am seeing more and more issues with these new duramax trucks right around the 20k mile mark. didn't want to deal with it if they arose. for me, gas just makes more sense. i should have gone gas in the first place. i know who you are talking about. cognito claims the same. they say adding a shock spacer will add about 1" of droop. it that is true, that tells me the shock is the limiting factor. i will measure droop travel before i change anything. this truck has 5200 lb bars. it does ride better than the duramax. the rear is the issue

well, i removed most of the parts I put on the truck and traded it for a ZR2. basically went back to gas. way to many potential issues with the diesel. interesting tid bit. the truck rode much better with the stock suspension parts (shocks, torsion bars, leafs) back on it. i left the torsion bars cranked slightly. but the ride was much smoother, absorbed bumps, cracks, etc... in the road better. i was actually quite surprised. i do remember that truck being the best riding stock hd truck i have had. i had fox reservoir accutune valved shocks, cognito comfort ride torsion bars, and cognito comfort ride leaf springs on the truck. food for thought. accutune did tell me that the softest riding shock would be a rancho 5000. on this truck, i think i will swap the torsion bars and leafs, but leave the mutlimatic shocks. will see i measured the torsion bars, and the cognito ones are definitely smaller diameter. not much

they retail for $346 in the states. I haven't seen any discounts on them, but I'm sure there can be some found. valving is standard, it is the same for gas and diesel. There's no adjustability to them. They cannot be revalved as far as I know

shocks:

the cognito bars are painted just like the OEM. they appear literally the same as OEM bars just without the part number stickers. i honestly don't feel they made a big difference in ride quality. the problem is: since the bars are lighter spring weight, the torsion keys need to be cranked more to get the same ride height. the increase cranking, negates the softer spring rate (IMO). just person seat of the pants observation obviously

i bet cognito buys them from gm and then upsells them

the cognito bars have the same imprints as the factory bars. I am 100% confident they are a GM made bar. you are correct, the more they are cranked, the more stiff they become. Yes, deaver makes the leafs for Cognito, as well as many other compnies

$800 plus shipping

I picked up a set of custom tuned shocks from Accutune

I have a set for sale, less than 2k miles on them. Will make a very good deal on them.

would anybody like to sell their stock lower control arms? if so, i would be interested in buying them

Fox shocks mount shaft down. I "upgraded" my HTOs to Accutune tuned Fox 2.0 reservoirs. The HTOs are for sale for anyone looking. I'll make a good deal on them

the u-bolts are M18x2.5

they are an m18 bolt. 110+ is pretty standard for many aftermarket u-bolts. i have used 3/4" bolts that called for 175-200 ft/lbs

Rear Spring Unit Bolt Nut[4x]: First Pass: 74 lb ft, Second Pass: Loosen 270degrees, Third Pass: 74 lb ft, Final Pass: 175 - 185degrees are these really the torque specs for the stock u-bolts? this seems low