In the Extralite hub two bearings 61803 are needed for the freewheel body and the hub body two 61,903th These are carried out both sides sealed grinding. This includes an extra Lagerset stable configuration hybrid ceramic bearings.
Seal: double-contact seals
Format: HDC heavy-duty hybrid Ceramic
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: about 48g (set)
Delivery: 2x 61903-2RS (6903) and 2x 61803-2RS (6803) Hybrid Ceramic Ball Bearings
Note: 61903 is identical to 6903 and 61803 to 6803 camps!