Bike Crank Bearing Set Four Pieces For Bottom Bracket Replacement Five Sixteenth Inch Ball Bearings Nine Balls Forty Four Point Five Millimeters Outer Diameter Thirty Two Point Five Millimeters Inner Diameter Fits Kids Bikes And Stretch Bikes

Four-Piece Bike Crank Bearing Set for Bottom Bracket
✔️ Outer diameter 44.5mm, inner diameter 32.5mm, 5/16 inch balls, 4 pcs

This four-piece bicycle crank bearing set is designed for bottom bracket replacement and fits bikes such as kids bikes and stretch bikes. It provides replacement bearing retainers to restore smooth operation and quiet performance.

✅ 9 balls per cage for smooth rotation
✅ Outer diameter 44.5mm, inner diameter 32.5mm
✅ Ball size 5/16 inch
✅ Includes 4 pieces for replacement and spare

💡 What is a bicycle crank bearing retainer used for in a bottom bracket?

It's a handy part that keeps the bearings seated, reduces play, and helps the crank run smoothly in the bottom bracket.

- keeps bearings seated in bottom bracket
- reduces crank wobble for quieter operation
- comes as 4 pieces for replacement and spare
- uses 9 balls per cage with 5/16 inch size