0
Home
Bikes
Electric Bikes
Gravel Bikes
Road Bikes
Fat Bikes
Hybrid & Cruiser Bikes
Kids Bikes
Balance Bikes
12-Inch (2-4 yr. old)
16-Inch (3-6 yr. old)
20-Inch (5-8 yr. old)
24-Inch (7+ yr. old)
26-Inch (10+ yr. old)
Mountain Bikes
Full Suspensions
Hard Tails
BMX
Accessories
Bags
Frame Bags
Fork Bags
Handlebar Bags
Toptube Bags
Trunk Bags
Panniers
Saddle Bags
Baskets & Racks
Baskets
Rear Racks
Bottles & Bottle Cages
Bottles
Bottle Cages
Car Racks & Trailers
Car Racks
Child Seats
Trailers
Fenders & Mud Guards
Grips & Bar tapes
Bar Tapes
Grips
Bar End Plugs
Headphones
Kickstands
Mirrors
Phone Mounts
Tools and Maintenance
Apparel
Vests
Bibs & Shorts
Bibtights & Knickers
Gloves
Helmets
Jackets
Jerseys
Protection & Warmers
Shades
Shoes
Socks
Pants & Tights
Caps & Hats
Essentials
Bells
Cleaning and Lubrication
Lights
Front
Rear
Set
Locks & Security
Cables
Chains
Combination
Compact
Headset, Saddle/Seatpost, Wheels
Sets
U-Lock
Accessories
Folding Lock
Multi-Tools
Parts
Forks
Bottom Brackets
Brakes
Brake Cables
Brake Levers
Brake Pads
Brake Parts
Brake Rotors
Cassettes
Chains
Chain Guides
Chainrings
Cranksets
Derailleurs
Derailleur Hangers
Di2
Groupsets
Handlebars
Pedals
Cleats
Powermeters
Saddles & Saddle Covers
Saddles
Saddle Covers
Shift Levers
Stem
Tires
Fat Tires
Gravel Tires
Mountain Tires
Road Tires
Trainer Tires
Winter Tires
Cyclocross
Tubes
12"
14"
16"
18"
20"
24"
26"
27.5"
700c
Tubeless
Valves
Sealants
Wheels
Carbon Wheels
Training Wheels
Alloy Wheels
Training
Chamois Cream
Cycling Computers
Indoor Trainers
Nutrition
Powermeters
Trainer Accessories
Tools & Maintenance
Maintenance
Tools
Pumps
Sale
Accessories
Apparel
Bikes
Components
Trainers
2026 Fall Blowout
Login / Register
✕
Cart
Items
No products found...
Login
Log in if you have an account
Login
Dont have an account?
Register
Forgot your password?
Home
Share this product:
Facebook
Twitter
Pinterest
Shimano
BB-UN300, Square Taper, 68/107mm (Silver)
C$24.99
Out of stock
Overview
Bottom bracket, 68mm/107mm.
Details
Simple and reliable square taper bottom bracket
Replaces both BB-UN26 and BB-UN55
Sealed cartridge bearings
Cr-Mo axle
For bicycles equipped with a chain case, select BB-UN300-K
For E-type front derailleur compatibility, choose BB-UN300-E
Fixing bolts not included; Shimano FC-E6000 bolts suggested
Fast delivery
Delivery is fast and reliable
Safe payment
Transaction is reliable and secure
Awesome support
Staff are always ready to assist
Top quality
We provide great quality products
By using our website, you agree to the usage of cookies to help us make this website better.
Hide this message
More on cookies »
