• Close-up of 43mm bottom bracket cups for kid bike
  • Close-up of 43mm bottom bracket cups for kid bike
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D'Amour

Kids Bottom Bracket Kit 1Pcs

Kids Bottom Bracket Kit 1Pcs

$20.00 CAD
$20.00 CAD $20.00 CAD
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Description |

The 43mm BB Kit for One Piece Crank is a compact bottom bracket assembly designed for smaller, non-standard kid and junior bicycles.
Built with standard steel cups and a 20/21mm thread, it provides a simple, reliable fit for bikes using smaller crank shells.

Perfect for quick repairs, rebuilds, or keeping an older kids’ bike rolling smoothly again.

Features & Specs |

Model 43mm BB Kit for One Piece Crank
Thread Size 20/21 mm
Cup Diameter 43 mm (for non-standard kid bicycle frames)
Bearing Type Loose ball bearing
Material Steel cups and bearings
Compatibility One-piece crank systems on smaller frames

 

Usage Tips & Compatibility |

Ideal For: Small children’s bikes and junior models using a one-piece crank.

Compatibility:

  • Fits frames with smaller 43mm bottom bracket shells.
  • Designed for cranks with 20/21mm thread.
  • Works as a replacement for non-standard or vintage kid bike setups.

Installation Tip: Grease bearing surfaces and threads before installation. Tighten evenly for a smooth crank spin and long-lasting performance.

Maintenance: Clean and regrease periodically to keep bearings rolling smoothly and prevent wear.

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