SUGINO CAPACITY BOOSTER ZF 12-Speed  full ceramic bearing Pulley Set

The bearings are made of full ceramic do not contain any metal, and use the optimal dry lubricant, resulting in amazing rotation performance with almost zero resistance. (Basic performance is the same as the regular product)
 Can be used with the Shimano genuine pulley gauge and without changing the chain length.

Can be used purely as a big pulley. 
Oscillating eccentric mechanism: Although the mounting shaft is eccentric, it achieves the same shifting performance as the Shimano genuine pulley. 
Friction resistance (S3 coating): It boasts excellent chain release and does not produce the noise that is typical of metal pulleys. 
Rotation performance: The larger diameter of the pulley allows the smooth rotation performance of the ceramic bearings to be fully demonstrated. 

Specifications 
Bearing: Full ceramic 
Compatible with Shimano 12S 

S3 12T (Guide)/16T (Tension) for 12S

Note: Backorder item