Dr. Pulley

SR-2318-20

Dr. Pulley Sliding Roller Weights 23x18 (20g)

Transmissions

Size: 23x18, Set of 6
Fits 250cc water-cooled 172mm engines.
Increases acceleration and re-acceleration properties
Broadens your range of gear ratios; Increases top end speed
Lasts longer than standard roller weights

Dr. Pulley 23x18 Sliding Roller Weights.. Please select weight from the option list.

Traditionally, gear ratio is changed by the up-and-down rolling movement of the roller weights in the ramp of the Moveable Drive Pulley (MDF).

Now the innovative Dr. Pulley Sliding Roller Weights slide up-and-down the ramp to change the gear ratio. This unique sliding movement (not rolling) provides exclusive advantages to increase CVT performance. With Dr. Pulley, no abnormal wear will occur even when running in high gear.

Dr. Pulley's U.S. Patent Number 7,276,004 states that their sliding roller weights eliminate abnormal wear, prevent reduction gear ratio deterioration, prolong the useful life of the transmission, and have the availability to adjust reduction gear ratios as well as driving performance. At the same time, Dr. Pulley Sliding Roller Weights are also adapted to compensate wear automatically, to adjust by itself to move further outward in a movable drive pulley half and to make the vehicle reach a higher maximum vehicle speed.

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