The Valving DataBase is a collection of stock and modified valve stacks for dirt bikes.

Modified valve stacks are available for purchase.    [details]
To see a list of mod stacks, click

ONE THING !!  We don’t want riders giving out the specific valve stacks in discussion forms.
You can use the valve stacks as you like, we just don’t want them posted online.

When you purchase a modified valve stack, we work with you to fine tune the bike.  After riding, call or email your feedback and we will assist in dialing in the bikes suspension.  If needed, we will supplying additional valve stacks based on your input.  All valve stacks used are dyno tested, thus telling us exactly what the valving changes are doing. 

Combining years of experience with a state of the art suspension dyno has aided in our quest to develope a new methodology in long travel suspension tuning.  This new methodology is detailed in the Suspension Info section, but here is a quick rundown.

• Basically we tune the fork or shocks damping curve based on the dyno numbers. After test riding the bike, we determine what part of the damping curve we want to change. Then we go into the damper and start making valving changes, dyno testing each new stack, until we arrive at the desired force numbers.
• Sometimes this may require several dyno runs. We keep track of each of these runs and record how the various shim changes affected the damping curve and catalogue this information for future reference. That way we can refer back to one of these stacks at some point in the future (if it has the numbers we’re looking for).   These dyno tests are listed in the Dyno Series section.
  [example:  Dyno Tests > Honda]

we decided this is in-house info and not available to others

We have forks and shocks for several late model dirt bikes that we use specifically for dyno testing. That way, you don’t have to send in your fork and shock each time a dyno test is needed.

Here is an example of how it works.  We can provide a recommended starting stack, or start with yours.  Either way, the valve stacks would be dynod and analyzed before starting.  After getting rider feedback, we would decide what part of the damping curve to adjust.  As outlined above, we take one of our shop shocks and dyno test new valve stacks until we come up with the desired numbers.  You would install the new stack in the bike and get more rider feedback.  Then the process repeats itself until you are satisified with the bikes performance.  Using this method, you will soon begin to see how easy it is to tune the bike when you know exactly what the valving changes are doing.

The Valving DataBase is a collection of stock and modified valve stacks for dirt bikes.

Modified valve stacks are available for purchase.    [details]
To see a list of mod stacks, click 

ONE THING !!  We don’t want riders giving out the specific valve stacks in discussion forms.
You can use the valve stacks as you like, we just don’t want them posted online.

When you purchase a modified valve stack, we work with you to fine tune the bike.  After test riding, call or email with feedback and we will assist in dialing in the bikes suspension.  If needed, we will supplying additional valve stacks based on your input.  All valve stacks used are dyno tested, thus telling us exactly what the valving changes are doing. 

Combining years of experience with a state of the art suspension dyno has aided in our quest to develope a new methodology in long travel suspension tuning.  This new methodology is detailed in the Suspension Info section, but here is a quick rundown.

• Basically we tune the fork or shock damping curve based on the dyno numbers. After test riding the bike, we determine what part of the damping curve we want to change. Then we go into the damper and start making valving changes, dyno testing each new stack until we arrive at the desired force numbers.
• We have forks and shocks for several late model dirt bikes that we use specifically for dyno testing. That way, you don’t have to send in your fork and shock each time a dyno test is needed.

Here is an example of how it works.  We can provide a recommended starting stack, or start with yours.  Either way, the valve stacks would be dynod and analyzed before starting.  After getting rider feedback, we would decide what part of the damping curve to adjust.  As outlined above, we take one of our shop shocks and dyno test new valve stacks until we come up with the desired numbers.  You would install the new stack in the bike and get more rider feedback.  Then the process repeats itself until you are satisified with the bikes performance.  Using this method, you will soon begin to see how easy it is to tune the bike when you know exactly what the valving changes are doing.