Rough Country 2.2 Shocks...
Got my new shocks today.
Why the rear shocks have to be upside down? (or is it rod-side down?)
Who got the 2,5" lift with performance 2.2 shocks? can you post a picture of the rear shocks?
Why the rear shocks have to be upside down? (or is it rod-side down?)

Who got the 2,5" lift with performance 2.2 shocks? can you post a picture of the rear shocks?
It depends on the type of shock...monotube shocks can go either way, some others have a up, and a down side, or the valves won't work properly, etc...
After that part, you look at clearance...is the shock body in the way of axle movement/hitting/being hit, etc...if it is, would flipping it around make it less likely to be hit/hit, etc....then you do, assuming its made to be able to, etc.
All things being equal, you go rod down, as the rod is lighter than the body, and, that decreases the sprung mass, which makes the suspension respond better (Less suspended weight has to move)

For the 2.2's....they are designed to go either way...but for the lift kit, they recommend shaft down for the above reasons.
Before you mount the damn things....measure the fully extended length, center of eye to center of eye...and, then, compress them ALL THE WAY, and measure the compressed length from the same points....that will FINALLY provide the extended/compressed lengths we need on those puppies.
After that part, you look at clearance...is the shock body in the way of axle movement/hitting/being hit, etc...if it is, would flipping it around make it less likely to be hit/hit, etc....then you do, assuming its made to be able to, etc.
All things being equal, you go rod down, as the rod is lighter than the body, and, that decreases the sprung mass, which makes the suspension respond better (Less suspended weight has to move)

For the 2.2's....they are designed to go either way...but for the lift kit, they recommend shaft down for the above reasons.
Before you mount the damn things....measure the fully extended length, center of eye to center of eye...and, then, compress them ALL THE WAY, and measure the compressed length from the same points....that will FINALLY provide the extended/compressed lengths we need on those puppies.
Last edited by TEEJ; May 9, 2008 at 01:45 PM.
Before you mount the damn things....measure the fully extended length, center of eye to center of eye...and, then, compress them ALL THE WAY, and measure the compressed length from the same points....that will FINALLY provide the extended/compressed lengths we need on those puppies.

Compressed 16,5"
Just finished instaling them, gonna take it for a test drive...
Just checked the TF BB Shock specs for comparison:
Maker ..................Model # .............Front/Rear ....................Extended .......................Compressed ....................Total Travel
TeraFlex...........001553200 ........F .......................26.89 ......................16.5 ...........................10.39
TeraFlex...........001554200 ........R........................28.09.......................17.25...........................10.84
Adding to my Data Base...
Rough Country .........2.2 .................F/R? ..........................25.0 .............................16.5 .....................................8.5
__________________________________
OK, so far, it appears that the RC 2.5" BB shocks, that it also uses for its 4" Lift Kit, compress to 16.5" and extend to 25". For now, it appears that the front and rear are the same...if not, I'm sure we can get an update.
That means the RC 2.2 shocks compress to about the same as the front TF BB shocks, but more than the rear TF BB shocks....but, only have 8.5" of wheel travel, one more inch of wheel travel than a stock shock's 7.5".
The TF BB shocks also droop to ~ 27 and 28" F/R, 2 - 3" further than the extended length of the RC 2.2's.
So, from an articulation perspective...the TF's are going to do better.
From a ride, handling, etc...perspective, the 2.2's might make up for their short lengths....I hope.
Maker ..................Model # .............Front/Rear ....................Extended .......................Compressed ....................Total Travel
TeraFlex...........001553200 ........F .......................26.89 ......................16.5 ...........................10.39
TeraFlex...........001554200 ........R........................28.09.......................17.25...........................10.84
Adding to my Data Base...
Rough Country .........2.2 .................F/R? ..........................25.0 .............................16.5 .....................................8.5
__________________________________
OK, so far, it appears that the RC 2.5" BB shocks, that it also uses for its 4" Lift Kit, compress to 16.5" and extend to 25". For now, it appears that the front and rear are the same...if not, I'm sure we can get an update.
That means the RC 2.2 shocks compress to about the same as the front TF BB shocks, but more than the rear TF BB shocks....but, only have 8.5" of wheel travel, one more inch of wheel travel than a stock shock's 7.5".
The TF BB shocks also droop to ~ 27 and 28" F/R, 2 - 3" further than the extended length of the RC 2.2's.
So, from an articulation perspective...the TF's are going to do better.
From a ride, handling, etc...perspective, the 2.2's might make up for their short lengths....I hope.
Last edited by TEEJ; May 13, 2008 at 02:21 PM.
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You said measure from the center of eye, but the front shocks do not have an eye on top, so i just measured the rear shock. Front shocks look longer... 
Probably f.ed it up didn't i?
Anyway, the ride is much softer then with rubicon shocks, and i didn't hear any noise so far...


Probably f.ed it up didn't i?

Anyway, the ride is much softer then with rubicon shocks, and i didn't hear any noise so far...
You might want to take into account the jounce bumper on the Performance 2.2 shocks. They are 1.5" and I would guess could compress to at least half their height. This would give these shocks an extra .75" of travel. That would put them at 15.75" compress for 9.25" stroke. I measured mine before I installed them, but didn't write down the numbers. I compared them to the stock shocks both front and rear. They were both about 2" longer extended and would be less than 2" compressed when you consider the jounce bumper. So I believe the front and rears were different lengths and stokes.
You said measure from the center of eye, but the front shocks do not have an eye on top, so i just measured the rear shock. Front shocks look longer... 
Probably f.ed it up didn't i?
Anyway, the ride is much softer then with rubicon shocks, and i didn't hear any noise so far...



Probably f.ed it up didn't i?

Anyway, the ride is much softer then with rubicon shocks, and i didn't hear any noise so far...
LOL
Don't sweat it...front shocks are typically shorter anyway...and if a post on top and no eye, you just use the post where the bushing rests...close enough.
Several of the lift kits' shocks are the same front rear though...or the fronts are a little shorter.
You Done GOOD!
You are the FIRST to post the info...you get KUDO's for that.


