Dr. Pulley 24x18 Sliding Roller Weights for the Fits Honda CN250, CN 4T 250, Helix 250, Elite 250, Suzuki Burgman 250 and many more.Select weight sizes now available in Black Pearl material: 22g. Select weights on sale; 13g, 14g, and 33g. 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.Please see our Warranty & Returns Policy. Size: 24x18Set of 6Available in 13 Gram Through 33 Gram WeightsBroadens your range of gear ratiosIncreases acceleration and re-acceleration propertiesIncreases top end speedLasts longer than standard roller weightsU.S. Patent Number: 7,276,004All Sales On Clearance Items Are Final!Please Note: Weight Color May Vary