Metal Shielded ZZ
Shielded bearings keep out the dirt which ensures an longer lifespan of the bearings.
The metal version also reduces drag created by the rubber sealings which means you lose less power of your drivetrain.
The metal version also reduces drag created by the rubber sealings which means you lose less power of your drivetrain.
Shielded bearings keep out the dirt which ensures an longer lifespan of the bearings.
The metal version also reduces drag created by the rubber sealings which means you lose less power of your drivetrain.