Fox Shox DHX Air 4.0 Rear Shock

Fox Shox DHX Air 4.0 Rear Shock 

DESCRIPTION

  • Position-sensitive Boost valve
  • Adjustable ProPedal Technology
  • Adjustable air spring pressure
  • Rebound adjust

USER REVIEWS

Showing 1-10 of 13  
[Apr 01, 2011]
Mountainfrog
Downhiller

Strength:

This shock works! Set-up is totally different from most shocks, run more air! Perhaps too little air is the reason some people have stuffed this shock. Easy set up, doesn't leak. Pro-Pedal switch easier to reach, but don't need to use.

Weakness:

Sticky skin too thin, cable wore right through it. Damping knob a little difficult to get to but once dialed in not a fuss.

This shock is well balanced to the Fox Float fork. I weigh 170lbs and run 85-90 psi up front and 190 to 200 psi in the rear with 175 in the Boost valve. This set up works super smooth and to date I've experienced nothing but pleasure while ridng this bike. This is my fourth Reign and each successive bike seems to come with better working Fox products. I actually prefer this shock over the RP23, which is a great shock! You must run more air than conventional set-ups in order not to blow through your travel and stuff it.

Similar Products Used:

I've had Manitou SPV, Fox RP3, and RP23 on my last three Reigns.

OVERALL
RATING
5
VALUE
RATING
5
[Mar 26, 2011]
TXTony
Cross Country Rider

Strength:

It makes the bike look tough(Enduro)...it holds air.

Weakness:

I have had this shock on my bike since 2006 and like others it stuck down on its third ride..had to be rebuilt...over the years I have left my Enduro sitting because of this shock and opted to ride my other bikes..the shock is like a pogo stick..when it gets going it really pogos..propedal on this thing is useless..it works reallly good if the trail is pointed down...all the time..anything else it makes the bike perform like some cheap out of control FS bike.

I am going to replace this shock on this bike and see if I can not bring the old girl to life...I feel I have missed what this bike is really capable of and am going to put a Monarch Shock on it from Push Industries

Similar Products Used:

Other Fox products

OVERALL
RATING
1
VALUE
RATING
2
[Nov 27, 2010]
motoman373
Weekend Warrior

Strength:

compliments bike rear suspension design, feels plush, looks well crafted.

Weakness:

havn't had any problems yet

sounds like some peple have had some unfortunate problems with their shocks, sounds like bike shop mechanics may be giving some lame excuses for improperly setting up the pressure from the shop or maby not. mine works good though with good understanding of suspension has easy set up. i give it a thumbs up for taking the abbuse i give it

Similar Products Used:

for rp23

OVERALL
RATING
5
VALUE
RATING
5
[Aug 27, 2009]
Knotzykiller
Downhiller

Strength:

Solid, has`nt Let me Down...

Weakness:

?

This fork came with my bike and I have used it many times for aggresive cross country and had it up to Whistler 4 times beating on it with jumps and just started on the drops. This shock has not let me down but I oil the piston stem before every ride and also check the air pressure before every ride as per my bike mec... I came on line to find out how to properly set up the air chamber and spring, maybe 1st set the spring then the air chamber??? I have a 450 LB spring and might beef up to a 550 LB spring, I`m 170 LBS. Again I have no idea how to properly set up the air chamber but I always rode with 170LBS in the chamber maybe that`s to much?

Similar Products Used:

None

OVERALL
RATING
5
VALUE
RATING
5
[Nov 22, 2008]
fred6ft
Downhiller

Strength:

good strength and very versatile. good adjustability

Weakness:

none yet

shock has had a lot of bad rap and all in all, this is not a bad shock. its adjustability is its strength and can be set to any type of ride you are into. the propedal is amazing. i actually forgot to switch it off on the way down, but it still gave me all the travel. shock is so light and even though this is the first full day of using the shock, i did not find any trouble setting the shock up. it is so plush and i dont have much bad points on it.

i way 180 pounds and got it set up at 210 psi in the main chamber and 170 in the top chamber.

the only reason why im not giving it 5 chilis is cause ive not done much riding with it yet.

Similar Products Used:

marzocchi

OVERALL
RATING
4
VALUE
RATING
4
[Oct 10, 2008]
b_maiden
Weekend Warrior

Strength:

Cool design and very robust casing. Looks very solid and feels solid in addition to adjustment options (Pro pedal)

Weakness:

It took a while to get the setting right. It does require more psi than I was expecting (approx. 175 psi) for my body weight I have never set my rear shock as much as that.

I have been reading the above comments/reviews and I will be honest, I got a bit worried that I bought an equally nasty shock in my bike. So I did the only thing I can to test it... ride the bloody thing. Of course firstly I set it up the best I can (sag meter, pro pedal etc.)realtive to my weight. I then took it to some good xc/downhill trails which involved creek crossings, rocky downhills, smooth rolling dh jumps and over trees and so on .... BULLET PROOF. NO leaks, no locking, no problem. Got lucky? Maybe....

Similar Products Used:

Specialized rear shock on Stumpjumper Comps 2008's. Sorry I dont know the actual model/series.

OVERALL
RATING
4
VALUE
RATING
5
[Sep 16, 2007]
Frank
Weekend Warrior

Strength:

Propedal works well you can limit the peddle bob with this ajustment.

Weakness:

I am disapointed with this product. First time ever I buy an expensive bike. Assumed that all components would work flawless. Mistake the shock id leaking oil from the rebound adjust button, the dealer supposedly sent it back to get rebuilt but the didn't fix the problem. Can you guess the shock is still leaking and from the same location. You would think that if you bought a high end bike the store or manufacturer would go out of their way to make sure all components work probably before selling them. Save your money and buy a Walmart throw away, you'll be happier you did!!

Crappy rear end on an expensive bike. And After being rebuilt to repair the leak the bike shock still leaks. I wonder, did it really get rebuilt??

OVERALL
RATING
1
VALUE
RATING
1
[Jun 09, 2007]
Terry
Cross Country Rider

Strength:

ummmm........ nice colour????? Sorry, that's all I could come up with.

Weakness:

I just got the bike back from a warranty job on the shock because it stuck down. I guess I have about 4 or 5 rides in now since I got it back and it happened again. I was 25 km's out and had to gingerly ride it back so I didn't rip my tire to shreds or pull off the front derailer. (Enduro riders will relate) I was pissed. I'm sending it back but this will be another 2-3 weeks off of riding because of this useless piece of junk.
Thats twice in less then 5 months of riding.


Bottom line? Garbage. I hope someone from Fox reads the reviews on this model and notices the theme. If you're buying an enduro ask them to switch it out to something else. Spring perhaps?

I don't grunt up a mountain on this pogo stick of a shock, with its negligible propedal action, to waste one of my two measly days off per week, to do 20 metres of the best cross country trail in Nelson BC (Paper bag for those interested), only to have my recently rebuilt shock break down AGAIN.
Sorry folks, I just got home from this and I'm fired up.

Similar Products Used:

My walmart bike with the rear suspension lasted years longer then this thing has.

OVERALL
RATING
1
VALUE
RATING
1
[Mar 23, 2007]
gt
Cross Country Rider

Strength:

fox product,

Weakness:

heavy, useless piggy back reservoir. leaks oil out out adjustment knob.

ive had the bike two months and its never been on dirt. (its middle of winter) i ride it to work and back daily. (about a mile on pavement). apparently from my bodyweight alone, the shock compressed and stuck. it would not return. i thought it was just low on air, but that wasnt it. the bike shop said it blew an internal seal. how, i dont know. if this is fox's finest free ride, dh shock, they need to go back to the drawing board. i am already looking at other options (rock shox pearl). the plus is, fox is good about repairing the shock, but im guessing it will be broke again after my first ride. maybe just a lemon. i will write another review in a couple months

Similar Products Used:

fox float rl (it was flawless for 5 years)

OVERALL
RATING
1
VALUE
RATING
1
[Oct 31, 2006]
tony
Cross Country Rider

Strength:

It is smooth when they work.

Weakness:

It stuck on the fourth ride.

After only four rides on the bike the shock stuck. I had to have it rebuilt. I am not sure how it will do on the long haul but one would think it would have held up better than four rides. The rides were XC trails nothing extreme. I am thinking for this type of bike a coil shock may be they way to go. If the shock goes again I will be replacing it with something else, not a Fox.

Similar Products Used:

RockShox Sid. Never a problem

OVERALL
RATING
5
VALUE
RATING
1
Showing 1-10 of 13  

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