Preguntas frecuentes - FAQ

There are bikes with a very soft front suspension as original equipment.
It means that when pilot rides on, depending on its weight, can have a considerable sag, even in static condition. Under this condition, front suspension sag in normal running is big, both off as well as on road.
With HFS system, front static sag is adjustable by applying more or less pressure to the gas spring. Therefore, you will be reserving more effective travel to your suspension and you’ll get benefits in braking, bottoming, etc.

Yes. You have to follow recommendations included in your manual for adjusting purposes.

To adjust sag in static condition, avoiding an excessive travel while riding.

Because setting is defined with spring chamber volume unloaded and lifting up front tyre is the only way. This is the accurate method of adjusting.

Adjustment may be incorrect and you could be running with less pressure than recommended.

No. Pressure displayed in the manuals is a recommendation depending on driver’s weight. On top of it, it is running style and kind of terrain; static adjustment may be around recommended pressure +/- 0,25 bar according driver’s preference.
It is recommended to try new set ups in steps of 0,25 bar in order not to implement too big changes in behaviour in one single step.
It is recommended to use, as long as it is possible, a known road or way to confirm benefits of the different set ups.

There is not fix interval to check out.

Yes, it is normal. There is a small interior circuit and it may retain some small portion of oil by capillarity, that is released mixed with air.

It is not necessary. Weight of passenger is basically on rear tyre; Nevertheless if it is going to spend long time in a long travel with extra load, for instance, it can be adjusted +0,25 bar from standard pressure, but not strictly speaking.

Yes, it is strictly necessary.
An alternative method to take out 120 c.c. is by aspirating that volume using a big size syringe connected to a plastic tube.
This alternative method can be used when you do know that oil volume in the fork is the one determined by the manufacturer.

It must not be done in any case!
As indicated in manual, air spring is to be installed right after the helicoidal spring, without any pressure in it. On top of it, if you notice that when installing the air spring it remains slightly high with respect to the bar, you should release air by pressing the valve and then push to bolt the element.
Installation should be softly made to prevent damage in the threads.

Code valve can be turned slowly until its orientation is OK to connect the pump. Once it is correctly oriented, you should not move it again. It is an assembly not to be continuously being turned.

Not essentially. Influence of HFS in riding is to improve front suspension absorption. For instance, in off-road it is less dependent on terrain irregularities, and driver can concentrate more in the best path independently of bumps or rocks (always with caution, of course).

Yes. In HFS design applied for each individual motorbike, spring rate and unloaded pressure recommendation is adjusted to provide approximately a 10% more of bottom resistance to the end of travel, and it also benefits anti-dive in braking.

HFS characteristic is progressive. First half of full travel (approximately) filter rough conditions very effectively, helping in keeping the motorbike under control.

With HFS system this is one of the improvements more noticeable for the user.
HFS allows the front fork to absorb much better loose stones as well as other type of irregularities due to the fact that its first half of the total travel (approximately) it is softer that original spring, and progressive; behaviour is progressive and firm at the same time.; it allows the rider to keep the motorbike under control more easily.
You choose your path, and HFS helps you to follow it!

Yes. You can do the same kind of tests that you do with conventional fork suspension systems.

HFS provides an improvement in motorbike’s behaviour by means of an adjustable and progressive front suspension.

Because deflection is combination of a gas spring together with an helicoidal one (both put in serial).
Gas has a progressive behaviour by nature.
In HFS system, the spring rate and recommended pressure setting is adjusted for each individual motorbike, seeking for having a first half of fork travel working mainly with gas spring, and the rest of stroke mainly with the helicoidal one (progressively along all fork travel!).
Adjust is recommended to have more bottom resistance.

It is maintenance free.
Moving parts are manufactured with high performance sliders and piston seals, and all the elements with high quality materials.