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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
Shimano BB-UN300-K Bottom Bracket - English, 68 x 122.5mm Spindle, Square Taper JIS, For Chain CaseShimano BB UN300 Square Spindle Bottom Brackets Fits JIS square taper cranksets Crankarm fixing bolts sold separately Hollow spindle Product Specifics Defined Color: Black Bottom Bracket Shell I. D.: 1. 37 Spindle Length: 122. 5 Spindle Interface Type: Square Taper JIS BB Shell Width (mm): 68 BB Frame Interface: English Today's Stock Status Currently not available UPC: 192790619279 EAN: Not available Manufacturer Part Number: EBBUN300KB23XW CR3495
Shimano BB-UN300 Square Spindle Bottom Brackets- Fits JIS square-taper cranksets
- Crankarm fixing bolts sold separately
- Hollow spindle
Product Specifics
- Defined Color: Black
- Bottom Bracket Shell I.D.: 1.37
- Spindle Length: 122.5
- Spindle Interface Type: Square Taper JIS
- BB Shell Width (mm): 68
- BB/Frame Interface: English
Today's Stock Status
Currently not available
UPC: 192790619279
EAN: Not available
Manufacturer Part Number: EBBUN300KB23XW
CR3495
154806-Q0-L
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 2225 reviews
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Product Reviews
★★★★★ 4
It works as it should.
Color: Gravel Black
It's what I was looking for. I cut the small foam stickers to keep it from moving around on counter into pieces & put the on the bottom works well. It did chance color? like white stained?
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Fits and works!
Color: Gravel White
Like it. Fits on edge my sink...
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Perfection!
Color: Gravel Black
It works well. Is solidly constructed. Reasonably priced. Beautiful to behold.
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Reviewed in the United States on August 3, 2025
★★★★★ 1
Soap stains wont wash off
Color: Gravel Black
Like the looks of it but gets easily stained with the soap and wont come off.
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Reviewed in the United States on December 4, 2025
★★★★★ 5
Perfect
Size: 16 Inch
Exactly what I ordered, took just a few minutes to assemble and mount the legs. Love that the bottoms can be manipulated to give a balanced stance.
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Reviewed in the United States on February 23, 2026