BB-UN300 Bottom Bracket
BB-UN300 Bottom Bracket
Final sale

Shimano

BB-UN300 Bottom Bracket

CAD$24.95
CAD$24.95
CAD$24.95

Final sale

The Shimano BB-UN300 is a sealed cartridge square taper bottom bracket designed for 68 mm BSA threaded frames. Featuring a durable Cr-Mo spindle and a 110 mm axle length, it delivers dependable, low-maintenance performance for compatible cranksets while replacing previous BB-UN26 and BB-UN55 models.

Size : 110mm/68mm
Free shipping on orders over $75
Proudly Canadian since 1963
Easy returns up to 30 days

Useful information

  • Square taper interface — Compatible with JIS square taper cranksets
  • Sealed cartridge design — Helps protect against contamination while reducing maintenance needs
  • Cr-Mo spindle — Chromoly construction enhances durability and long-term reliability
  • 68 mm BSA threading — Fits frames with a standard English threaded bottom bracket shell
  • 110 mm axle length
  • Replaces BB-UN26 and BB-UN55
Brand Shimano
Season SS26
Product number 255400 BOTTOM BRACKET BB-UN300
SKU 255400-11068
UPC 192790619200
Bike Tire Type
Tire mount
Material
Supplier Code EBBUN300B10X