Power Valve Adjuster

This will influence the opening of the power valve when using an additional exhaust pipe. With the VHM power valve adjuster with two stage spring, you can easily adjust the opening timing of the power valve with the screw. The first stage of the spring allows the power valve to open simply for a much better and direct response. The second part of the spring keeps the power valve fully open for a maximum exhaust flow. The VHM power valve adjuster is made from high quality aluminium machined solid forging.

When using another exhaust pipe, it will influence the opening of the power valve. With the VHM power valve adjuster with 2 stage spring (partnumber DA31153), you are able to adjust the opening timing of the power valve easily with the screw. The first stage of the spring allows the power valve open very easily for a better and direct response. The second part of the spring keeps the power valve full open for a maximum exhaust flow. The VHM power valve adjuster is made from high quality aluminium machined from solid.

The VHM power valve adjuster (Part number DA31153) can be used with the VHM cylinder head and VHM power valve base as well as the OEM cylinder head and power valve base.