How to service your Flexx MTB Handlebars
Proper Handle Resistance
Your handles may have some drag or resistance when the elastomer is removed. The drag is caused by the exacting tolerance required for the Flexx Handlebar to offer the utmost in control and reliability. Flexx Handlebar pivot points are most likely the most exacting tolerance on your entire machine and must be so. Too large of a tolerance will not the yield the precise control you as a rider require to perform at your best. It is not only acceptable but preferred to have some drag on the handles. Each side of every Flexx Handlebar System is measured with a strain gauge to be sure the resistance of each handle is within our tolerance. If your bar rebounds to its present ride height after being compressed you should be good to go. If you have any questions concerning this please contact us.
The Step by Step Service Process
1) Do not mix the pivot pins up. The left pin needs to go back in the left hole, and the right pin in the right hole. We separate our pins and hone our pivot holes to .0001 of an inch. It is crucial to have proper fitment of each pin so there is not front to back play.
2) The second key point is do not strike the pivot pin directly with a hammer, press, or any other tool. The best way to protect the pivot pin from "mushrooming" is to use an old M6x1.0 bolt threaded into the pivot pin. Use the bolt to push the pivot pin out.
- 4mm Allen Wrench - To change elastomers
- 3mm Allen Wrench - To remove pin end caps if necessary
- Blue Loctite
Servicing your Flexx Handlebar can be done on or off the machine. It is easier to do off the machine if you have a proper vise. Be sure if you do place the Flexx Handlebar in a vise you use plastic jaws or a similar product to protect the Flexx Handlebar from being damaged by the jaws.
- Remove the elastomer nuts and bolts, then remove the elastomers.
- Remove the pin end caps with a 3mm allen.
- Now drive the pins completely out. Again, use a M6x1.0 bolt to protect the pin.
- With pins out you can press the pivot bushings out of the bore. A long 6mm socket can typically be used.
- Clean pivot bores and pins.
- Place the pivot pin in the back side of the bar, square to the bore. You will know the pin is square to the bore when it will not rock easily up, down, or to the side without applying force.
- Align the handle bore with the center section bore then press the pivot bushing through both components.
- Protecting the pivot pin with the m6x1.0 bolt threaded into it, tap the pivot pin all the way through the bore flush with the other end.
- Install the pin end caps, use blue Loc-tite on both the male and female threads. Torque the pin end caps to 4nm with a 3mm allen.
- Install the compression elastomer. Butt the 45* relief in the narrower part of the elastomer up against the handle.
- Install the rebound elastomer on the nut.
- Apply blue Loc-tite to the threads of both the bolt and nut. Only use the torx head to hold the bolt when turning the 4mm nut. The bolt will bottom out in nut, bring the handle to 5* up-sweep.