MechPort 2Pcs Bottom Bracket Bearings 19x31x7 mm Sealed 2RS Deep Groove for Mountain Bike Compatible with 1905317-2RS 19317-2RS 1905317

- Compatible with 1905317-2RS 19317-2RS 1905317 and bottom bracket shells that use 19x31x7 mm deep groove ball bearings for smooth crank rotation in trail riding commuting and daily training. - replace OEM 1905317-2RS 19317-2RS 1905317 to simplify cross reference and confirm the correct size match for your drivetrain setup. - Sealed Design 2RS double rubber seals help block dust and moisture keep grease inside and support consistent spin under varied weather. - Smooth Performance Deep groove geometry supports radial loads in crank assemblies aiding efficient pedaling and steady rotation on climbs descents long rides workouts and commutes. - Easy Replacement Standard metric sizing 19x31x7 mm enables quick swap at home or workshop package includes 2 bearings to renew worn bottom bracket bearings.