3903 LLU Enduro Double Row Sealed Radial Bike Bearing Abec 3 - 17x30x10mm Open Reference Speed: 20 000 r/min

Reference Speed: 20 000 r/min

Inside d: 30

TSN513 C Felt ring seals

Key Features & Benefits:

Synchronous belt drive is not considered as a substitute or replacement to other modes of belt drives

3903 LLU Enduro Double Row Sealed Radial Bike Bearing Abec 3 - 17x30x10mm Open Reference Speed: 20 000 r/minPrimary application for this bearing is for older square taper BBs. The double row design greatly reduces flex in BB spindles and doubles the bearing contact area, while requiring roughly 25% less width than two single row bearings. This ABEC 3 bearing features deep groove design races, with Grade 10 balls, LLU seals and 90% fill with high pressure water proof grease to withstand daily abuse of use and the elements. The Enduro line of bearings are