Question about 1994 Suzuki RF 900 R

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My rear shock is too soft.the bike is 14yrs old

I need to know wat psi to pump it up to.ive got the shock set to its last setting

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You cant air anything up it is nitrogen filled the only thing you can do is buy a stiffer spring from someone like race tech suspension and you could also have them revalve it to your weight. or you can do it yourself.

Posted on Nov 23, 2008


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1 Answer

Adjusting rear shocks to lower my 1999 road king

Sorry I do not go back that far so if the shocks are not air shocks you can likely adjust them by turning the spring to a higher or lower setting and if air shock you need a special shock air pump to raise ort lower the air pressure. Use of a regular pump will not be accurate and an air supply more than 50 psi will likely destroy the shocks in any case.

Jul 19, 2012 | Harley Davidson FLHR Road king Motorcycles

1 Answer

I have a 1987 cbr 600r Hurricane and i need to know how much air to put in the front forks?

The front forks are adjustable to the type of ride you want. First, set the rear shock to the setting you want soft, medium, or hard. There should be max pressure information in your owners manual and on a sticker on the front forks. Typically the most pressure that can usually be put into a Honda front fork is around 14 PSI. Add, carefully, 10-12 PSI using a hand or foot bicycle pump with a gauge on it. You will probably find this way too stiff. Be careful not to put too much pressure in the forks or you will pop the seals and have to replace them.Then with the bike loaded the way you are going to ride (soft for comfort or hard for two up riding) bounce on the seat. What you want to feel is the front and back suspension dropping at the same time. This is how racers set up there motorcycles for hard cornering. If both the front and rear of the cycle drop together you have an easier time controlling the bike during extreme maneuvers. Since the front is usually stiffer than the back(you added pressure there) slowly bleed the pressure out of the front fork tubes until the the front and back drop together while you are bouncing with the bike loaded the way you are going to ride. Now you are set up for extreme riding conditions. Soft or hard that is how you set up all motorcycle suspensions by balancing the the amount of front cushion/pressure to match the back cushion/pressure.

Jun 30, 2011 | 1987 Honda CBR 600 F(1)H

1 Answer

How much air (p.s.i.) should there be in the front and back shocks


Depends on what you want to get. In theory the fork can be between 0 and 43 psi. In practice if you put 40 psi it will be completely stiff and seals may start leaking.

In practice the front take 0 to 12 psi, and rear shock from 7 to 21 psi.

If you need street performance put more pressure. Settings for comfort in long travels will require lower pressure.

Here tables from service manual:




Rear shock absorber air pressure can vary from 0.5 kg/cm2 (7 psi) to 1.5 kg/cm2 (21 psi) as the road conditions become more severe or the load increases.

For the front here below the procedure from service manual. I suggest staying far from the 43 psi limit suggested if you do not want to break the seals.

8. Make sure the front wheel is off the ground and inflate the forks to 0-0.4 kg/cm2 (0-6 psi). Do not use compressed air; use only a small hand-operated air pump.
Never exceed an air pressure of 43 psi (3.0 kg/cm2) as damage may occur to internal components of the fork assembly.

Jun 12, 2011 | 1986 Honda VF 500 F

1 Answer

Wanting to find out the best setting for rear dual shocks for a comfortable ride for a 340 man?

Set them on the firmest selction.
On my bike i use a soft setting when i ride alone and a firmer setting when carrying a passenger.

340 lbs is a big man, use the firmest selction.
If that is too hard drop one setting, but you don't want to be too soft and bottom out the rear tire to the rear fender.

Dec 08, 2010 | Honda VTX 1800 Motorcycles

2 Answers

I have a early 1980's honda 750 need to know how much air pressure the fork's hold, or need to put in them.

You do not have to put any air in the forks. There was a sticker telling you maximum pressure on the bike. It may still be there. Maximum pressure is not more than 14 pounds. You will never need more than 7 or 8 pounds. First set the rear shocks for a hard or soft ride. Then holding a bicycle foot pump with a pressure gauge on it in your hands , give it one pump (do not go over 10 or 12 pounds pressure). Now bounce on the seat and bleed pressure out of the forks until the front and rear shocks drop at the same time. Your bike suspension is now set up correctly for riding.

Sep 26, 2010 | 1987 Honda VF 750 C Super magna

1 Answer

Theres oil in my rear shock lines, I was going to check the air in the rear shocks for some 2 up riding this weekend, just traded up for the bike (used) and the dealer said everythings great they did the...

shocks are fine, there is a mixtre of air and fork oil in the air shocks. if u want to check, u need a air pump that screws on and has an air gauge on it. harley sells the one for your bike. proper psi is at 13 psi.

Aug 06, 2010 | 2000 Harley Davidson FLHRCI Road King...

1 Answer

How to add air to the rear shock

What make and model of shock?

Typically a shock will have a schraeder valve somewhere on it. There are a couple of brands of very high pressure/low capacity air pumps designed specifically for shocks ...

for example:,7987,s1-14-48-0,00.html

Your weight, riding style, preferences, shock and bike design will dictate the optimum amount of pressure to maintain in the shock and its rebound damping setting (if available).

The specialness of the pump isn't so much its high pressure capacity but the ability to remove the pump without losing significant air pressure. They tend to be very small and light so carrying one isn't much of a burden.

I've had bikes go years with no need for adjustment and then on a really cold night in the garage go completely limp, or not. There's no pattern. I pump them up and ride for a few more years.

Feb 20, 2010 | Cycling

1 Answer

Got the bike used with 8500 mi & no owners 2001 fxdxt

yes, the rear shocks use air pressure to adjust the ride to exactly the way you like it. Only problem is that you don't want to go to your local fuel station and use their pump. You should have gotten a small hand pump with the bike. If not, you can get one at your local dealership or order an aftermarket pump. It usually takes somewhere around 5 psi for most people, I think. The reason I think is that I've never owned a air suspension bike and never asked anyone how much air to put in the system. Some bikes even have air front forks. Seems the air fitting is in the end of one of the grips or something.

Jan 04, 2010 | 2001 Harley Davidson FXDXT Dyna Super...

2 Answers

Honda front strut air pressure

fork psi should'nt exceed 9psi. fork air valves are best used for removing air. spring preload should be adjusted to abtain the correct sag (1'' on most street bikes)

May 08, 2009 | 1982 Honda CX 500 B

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