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The Shimano BB-UN300 is a high-quality, sealed cartridge bottom bracket designed for urban, trekking, and touring bikes. Its super-accurate bearings provide smooth operation, while the maintenance-free design keeps out dirt and water, ensuring long-term durability. With a square taper spindle and BSA threading, this bottom bracket is easy to install and offers a precise, secure fit for traditional chainsets.
Key Features & Benefits:
✔ Sealed Cartridge Bearings – Provides smooth operation and extended lifespan.
✔ BSA Threaded Bottom Bracket – 68mm width for compatibility with many urban, trekking, and classic bikes.
✔ 110mm Square Taper Spindle – Designed for traditional chainsets.
✔ Durable & Hard-Wearing Design – Keeps out dirt, mud, and water for low maintenance.
✔ Easy Installation – Quick setup with no adjustment required.
✔ Slim Profile – Allows clearance for cable routing under the bottom bracket.
Technical Specifications:
Feature
Specification
Product Type
Bottom Bracket
Model
BB-UN300
Bottom Bracket Type
BSA Threaded
Width
68mm
Spindle Length
110mm
Spindle Type
Square Taper
Bearing Type
Sealed Cartridge
Best For
Urban, Trekking & Touring Bikes
Colour
Silver
Ideal For:
✔ Urban & commuter bikes needing a durable and smooth bottom bracket.
✔ Trekking & touring bikes requiring a reliable, maintenance-free solution.
✔ Cyclists replacing or upgrading their square taper bottom bracket.
4550170619190
Delivery
At Clarkes of Cavan, we are passionate about getting your order to you quickly and safely and we understand it is important for you to know when your order will be delivered.
Delivery Cost & Times
Free delivery on orders over €99 applies in most cases (Ireland), where a product is excluded from this it will be noted on the product page. Some items are large and cannot be sent for free. Standard delivery costs apply to all other countries.
You will be provided with tracking information so you can keep an eye on your order at all times. Delivery of Bulk items (Pallet) may take a day or two extra.
Country
Delivery Cost
Delivery Time
Ireland
€8.50 - Free over €99 excluding bulk items
1-2 Business Days
United Kingdom
€15.50
3-5 Business Days
Austria
€18.45
5-7 Business Days
Australia
€68.40
7-10 Business Days
Belgium
€18.45
5-7 Business Days
Bulgaria
€18.45
7-10 Business Days
Croatia
€18.45
7-10 Business Days
Cyprus
€18.45
7-10 Business Days
Czech Republic
€18.45
5-7 Business Days
Denmark
€18.45
5-7 Business Days
Estonia
€18.45
7-10 Business Days
Finland
€18.45
7-10 Business Days
France
€18.45
3-5 Business Days
Germany
€18.45
3-5 Business Days
Greece
€18.45
7-10 Business Days
Hungary
€18.45
5-7 Business Days
Iceland
€18.45
7-10 Business Days
Italy
€18.45
5-7 Business Days
Latvia
€18.45
7-10 Business Days
Lithuania
€18.45
7-10 Business Days
Luxembourg
€18.45
5-7 Business Days
Malta
€18.45
7-10 Business Days
Netherlands
€18.45
3-5 Business Days
Norway
€18.45
7-10 Business Days
Poland
€18.45
5-7 Business Days
Portugal
€18.45
5-7 Business Days
Romania
€18.45
7-10 Business Days
Slovakia
€18.45
5-7 Business Days
Slovenia
€18.45
7-10 Business Days
Spain
€18.45
5-7 Business Days
Sweden
€18.45
7-10 Business Days
Switzerland
€18.45
7-10 Business Days
United States
€88.45
10-15 Business Days
Some items we sell will take more time because of size and dispatch location. This will be noted on the product page or on checkout.
Tracking Information
When your order is send you will be provided with tracking information from the relevant courier. This tracking information will be sent to the email provided when on the account registered, or the email used in the checkout process.
Clarkes of Cavan use An Post, UPS, Royal Mail and DSV pallet delivery.
If you still need further assistance regarding your delivery please contact the online department on 049 433 2166 or via email at online@clarkesofcavan.ie
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The Shimano BB-UN300 is a high-quality, sealed cartridge bottom bracket designed for urban, trekking, and touring bikes. Its super-accurate bearings provide smooth operation, while the maintenance-free design keeps out dirt and water, ensuring long-term durability. With a square taper spindle and BSA threading, this bottom bracket is easy to install and offers a precise, secure fit for traditional chainsets.
Key Features & Benefits:
✔ Sealed Cartridge Bearings – Provides smooth operation and extended lifespan.
✔ BSA Threaded Bottom Bracket – 68mm width for compatibility with many urban, trekking, and classic bikes.
✔ 110mm Square Taper Spindle – Designed for traditional chainsets.
✔ Durable & Hard-Wearing Design – Keeps out dirt, mud, and water for low maintenance.
✔ Easy Installation – Quick setup with no adjustment required.
✔ Slim Profile – Allows clearance for cable routing under the bottom bracket.
Technical Specifications:
Feature
Specification
Product Type
Bottom Bracket
Model
BB-UN300
Bottom Bracket Type
BSA Threaded
Width
68mm
Spindle Length
110mm
Spindle Type
Square Taper
Bearing Type
Sealed Cartridge
Best For
Urban, Trekking & Touring Bikes
Colour
Silver
Ideal For:
✔ Urban & commuter bikes needing a durable and smooth bottom bracket.
✔ Trekking & touring bikes requiring a reliable, maintenance-free solution.
✔ Cyclists replacing or upgrading their square taper bottom bracket.
4550170619190
At Clarkes of Cavan, we are passionate about getting your order to you quickly and safely and we understand it is important for you to know when your order will be delivered.
Delivery Cost & Times
Free delivery on orders over €99 applies in most cases (Ireland), where a product is excluded from this it will be noted on the product page. Some items are large and cannot be sent for free. Standard delivery costs apply to all other countries.
You will be provided with tracking information so you can keep an eye on your order at all times. Delivery of Bulk items (Pallet) may take a day or two extra.
Country
Delivery Cost
Delivery Time
Ireland
€8.50 - Free over €99 excluding bulk items
1-2 Business Days
United Kingdom
€15.50
3-5 Business Days
Austria
€18.45
5-7 Business Days
Australia
€68.40
7-10 Business Days
Belgium
€18.45
5-7 Business Days
Bulgaria
€18.45
7-10 Business Days
Croatia
€18.45
7-10 Business Days
Cyprus
€18.45
7-10 Business Days
Czech Republic
€18.45
5-7 Business Days
Denmark
€18.45
5-7 Business Days
Estonia
€18.45
7-10 Business Days
Finland
€18.45
7-10 Business Days
France
€18.45
3-5 Business Days
Germany
€18.45
3-5 Business Days
Greece
€18.45
7-10 Business Days
Hungary
€18.45
5-7 Business Days
Iceland
€18.45
7-10 Business Days
Italy
€18.45
5-7 Business Days
Latvia
€18.45
7-10 Business Days
Lithuania
€18.45
7-10 Business Days
Luxembourg
€18.45
5-7 Business Days
Malta
€18.45
7-10 Business Days
Netherlands
€18.45
3-5 Business Days
Norway
€18.45
7-10 Business Days
Poland
€18.45
5-7 Business Days
Portugal
€18.45
5-7 Business Days
Romania
€18.45
7-10 Business Days
Slovakia
€18.45
5-7 Business Days
Slovenia
€18.45
7-10 Business Days
Spain
€18.45
5-7 Business Days
Sweden
€18.45
7-10 Business Days
Switzerland
€18.45
7-10 Business Days
United States
€88.45
10-15 Business Days
Some items we sell will take more time because of size and dispatch location. This will be noted on the product page or on checkout.
Tracking Information
When your order is send you will be provided with tracking information from the relevant courier. This tracking information will be sent to the email provided when on the account registered, or the email used in the checkout process.
Clarkes of Cavan use An Post, UPS, Royal Mail and DSV pallet delivery.
If you still need further assistance regarding your delivery please contact the online department on 049 433 2166 or via email at online@clarkesofcavan.ie
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Shimano BB-UN300 Bottom Bracket | 68mm BSA Thread | 110mm Spindle | Sealed Cartridge
