EXTRALITE ball bearing set for HyperRear | HyperBoost
In the Extralite hubs, two 61803 bearings are required for the freewheel body and two 61903 bearings for the hub body. These are designed with rubbing seals on both sides, with the "LLB" version running particularly smoothly.
Seal: double-sided rubbing seal
Dimensions 61803-2RS: 17 x 26 x 5 mm (inside x outside x width)
Dimensions 61903-2RS: 17 x 30 x 7 mm (inside x outside x width)
Weight: approx. 48g (in the set)
Scope of delivery: 2x 61903-2RS (6903) and 2x 61803-2RS (6803) ball bearings
Note: 61903 are identical to 6903 and 61803 to 6803 bearings!