Seller notes

Replaces centrifugal clutch system and boosts performance. Clutch is asymmetric-type torque converter system with asymmetric. sheave faces, this makes it possible to force the belt to a diameter within. the drive clutch (at high rpm) that exceeds the usual 1:1 drive ratio. TAV2 system can actually attain a .90:1 ratio (10 percent overdrive). Movable sheave face is 18degrees, stationary sheave is 21/2 degree, for a collective angle of 201/2 degree. For use on 3/4in. or 1in. crankshaft diameter 2-...

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