A flyweight comprises a body. The body of the flyweight comprises a pivot, a cam surface, and a first coupler. The first coupler is configured to selectively couple at least one first weight to the body distal from the cam surface. A flyweight comprises a body having at least 20% of its mass positioned to contribute negative torque about a pivot related to an acceleration of a CVT clutch from an idling condition. A method of tuning a flyweight comprises attaching at least one first weight to a first coupler of a body of the flyweight distal from a cam surface of the body. A CVT clutch comprises at least one flyweight with a first coupler configured to selectively couple at least one first weight to a body of the flyweight distal from a cam surface.

An adjustable flyweight pivot shaft assembly for a CVT comprising a pivot shaft, a flyweight engaged with a pivot shaft surface, an eccentric collar having a bore with an eccentric center axis, the pivot shaft engaged with the eccentric collar bore, the eccentric collar having an indexing portion, the indexing portion engagable with the receiving portion on the CVT body, the indexing portion engaging the receiving portion to lock the eccentric collar and thereby pivot shaft in a desired position with respect to the axis of rotation of the CVT.