Description
Shimano's Square Taper Bottom Bracket BB-UN300 is a standard BSA-style bottom bracket available in various shaft lengths.
The BB-UN300 Square Taper Bottom Bracket is Shimano's successor to the BB-UN26 and BB-UN55 models that were previously manufactured.
The BB-UN300 has BSA standards and is available in a variety of different axle lengths, covering a wide range of bicycle types from touring bikes and city bikes to old road bikes and mountain bikes.
*Crank bolts are not included.
SPEC
Type: BSA
Shell width: 68mm
Axle length: 107mm, 110mm, 113mm, 117.5mm, 122.5mm, 137mm
Axle type: Square taper (JIS)
Bearing: Steel
Axle material: Steel
Bottom bracket cup material: Aluminum (left), Aluminum/ Steel (right)
- We ship within 1-2 business days after receiving your order (payment). (Basically, orders placed before 12:00 p.m. are shipped the same day.)
- Messenger delivery is available within Nagoya City only.
- We ship every day from Monday to Sunday, except on temporary holidays.
- Available delivery areas: All over Japan and the world.
- Please note that delivery may be delayed due to credit card processing status. If you would like to specify the delivery date and time, please fill in your request in the additional information in the shopping cart.
- The product will be shipped from Circles.
- Please contact the shipping company in case of damage or loss during shipping.
Regarding the delivery of complete bikes
- Please note that a separate shipping fee of 9,900 yen (tax included) will be charged for shipping complete bikes. (However, an additional fee will be charged for delivery to Okinawa and remote islands.)
- After receiving your order, we will do a final check and ship complete bikes, but it may take 1-2 weeks. Please understand.
- We will send the bike with some parts removed for packing. We strongly recommend that you have your bicycle assembled at your nearest bicycle store.
- We will inform you of the delivery date and other details by e-mail.
- We apologize for any sales discrepancies at the store.
Regarding the delivery of frame sets
- Nationwide flat-rate shipping: 5,500 yen (tax included) (However, an additional fee will be charged for delivery to Okinawa and remote islands.)
- We will inform you of the delivery date and other details by e-mail.
- We will provide the pre-treatment of facing and tapping for the frame sets purchased at our store as a service. We will inform you separately after purchase.
- We can also install a headset and BB for a fee, so please feel free to contact us.