Fox DHX 4 shock psi level
- Thread starter scorpia26
- Start date
supergayracer
Likes Dirt
always run 120 psi on a DHX, then change spring rates if you need softer or harder.... don't use air pressure to tune the stiffness, use the spring rates..
nickmann
Likes Bikes and Dirt
yeh mine says min 75. i run about 100. im 70kgThanks for the coming help. But just curious, the shock says minimum 125psi.
why do you guys suggest lower psi?
Still thanks alot for the info
nickmann
Likes Bikes and Dirt
the shock. u prob got the wrong manual. or maybe they made a typo
vitaly2007
Cannon Fodder
I got Fox DHX 4 coil adjustment problem
Hi I recently baught a dhx 4 coil spring 400x2.80. My problem is when I jump like 5 foot or more or even just ride down a big staires rally, I hit ma rear shock to end all the time and I dont find that normal.
Cause I weight 75 kl and ma psi is like 140 and shock is 400x2.80 and I feel it to weak on the resistance for ma jump.
I see lot of big shocks that have long springs and I tod maybe I should put the same one ? like a 600x3.19 ??
Pleas let me know on this issue cause I think I hit my shock to end to often and its not good.
Any suggestions pleas
Hi I recently baught a dhx 4 coil spring 400x2.80. My problem is when I jump like 5 foot or more or even just ride down a big staires rally, I hit ma rear shock to end all the time and I dont find that normal.
Cause I weight 75 kl and ma psi is like 140 and shock is 400x2.80 and I feel it to weak on the resistance for ma jump.
I see lot of big shocks that have long springs and I tod maybe I should put the same one ? like a 600x3.19 ??
Pleas let me know on this issue cause I think I hit my shock to end to often and its not good.
Any suggestions pleas
skwiz05
Likes Bikes and Dirt
1. Welcome to Rotorburn.
2. Read the rules - SPEAK ENGLISH, no da ín da hood spk....
3. Im thinking you need a 500, or 550 x2.8 spring......
4. What bike?
bumpygreen
Rate Cool
k_d
Likes Dirt
Back on topic.
I was told (a little while back so this might not be 100% right) that the 75 psi (written on the shock body) is the ABSOLUTE MINIMUM that you can run, and that the pressure in the manual (usually around 125psi) was the recomended pressure to ensure the long life of the seals.
This is what I was told, so I cant guarantee that this is 100% correct.
Also, Usually in the manual there is a very rough guide as to how much pressure you should be using. Failing that, trial and error is your friend.
I was told (a little while back so this might not be 100% right) that the 75 psi (written on the shock body) is the ABSOLUTE MINIMUM that you can run, and that the pressure in the manual (usually around 125psi) was the recomended pressure to ensure the long life of the seals.
This is what I was told, so I cant guarantee that this is 100% correct.
Also, Usually in the manual there is a very rough guide as to how much pressure you should be using. Failing that, trial and error is your friend.
Whys that?
How does the bike ride? Do you run any pro pedal? Depending on the year of DHX4 the boost valve min/max pressure may vary, '09 model is 125-200psi. The main effect of the boost valve is the vary the compression damping, more psi more compression damping and vice versa.
A good place to start is 125psi, see how it rides, does it feel like it has enough compression damping or is it blowing through it's travel fast. If yes then add a bit of psi and try again, just experiment. It varies massively between, bike, riding style etc. Unless you say, for example, I ride a giant glory with a 350lb spring etc etc it's pretty hard to come up with a definitive answer. Even then what suits rider A doesn't necessarily suit rider B.
