This is the Dr. Pulley 30x18 SLIDING Roller Weights, 169-561.
These weights fit Artic Cat 1000cc models (1XT, Prowler XT/Z Thundercat), CFMoto models from 500cc-800cc (CF500, CF600, CF625, CF800), Suzuki Kingquad (450, 500, and 750 models), SYM Maxsym (400cc and 600cc) and Quad Raider (600cc), and Yamaha models from 350cc-700cc (Bruin 350, Grizzly 350/400/450/550/600/660/700, Kodiak 400/450, Rhino 450/660, Viking 700, and Wolverine 350/450/700.)
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 prevent 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. In addition, 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.
Product Specifications:
- Size: 30x18
- Set of 8
- Lasts longer than standard roller weights
- Excellent Heat Resistance
- Low Friction / Low Wear
