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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 127.5mm 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: 127. 5 Spindle Interface Type: Square Taper JIS BB Shell Width (mm): 68 BB Frame Interface: English Today's Stock Status Currently not available UPC: 192790619170 EAN: Not available Manufacturer Part Number: EBBUN300KB27X CR3496
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: 127.5
- Spindle Interface Type: Square Taper JIS
- BB Shell Width (mm): 68
- BB/Frame Interface: English
Today's Stock Status
Currently not available
UPC: 192790619170
EAN: Not available
Manufacturer Part Number: EBBUN300KB27X
CR3496
154807-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
4.2 ★★★★★
Based on 59 reviews
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Product Reviews
★★★★★ 5
Value purchase
This item arrived well packaged, intact with timely delivery. I am satisfied with the product
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Reviewed in the United States on December 5, 2022
★★★★★ 4
works
i feel like the hole isn’t as small as before so less pressure now
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Reviewed in the United States on October 11, 2024
★★★★★ 5
Effective
Works well
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Reviewed in the United States on February 26, 2023
★★★★★ 5
Works.
Fits.
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Reviewed in the United States on December 11, 2022
★★★★★ 5
Great Long-Lasting Replacement Heads for BURST Toothbrush
Color: Rose Gold, Color: Rose Gold
I really like these replacement toothbrush heads for my BURST electric toothbrush. They seem to last a very long time compared to many other toothbrush heads I have tried. The bristles hold up really well and do not get worn down or frayed quickly, even with regular use. While I still try to replace my toothbrush heads routinely for hygiene purposes, I honestly feel like these could easily last for several months if needed.
The replacement heads attach perfectly to the toothbrush and feel very secure once connected. I also appreciated that they offer them in pink because it matches my toothbrush perfectly and adds a fun touch. The price also feels pretty reasonable for a three-pack considering the quality and durability of the heads themselves.
My only small complaint is that they are made of plastic, which I personally do not love from an environmental standpoint. I also am still undecided about the black bristles because it can make it harder to tell if the toothbrush is fully clean after use. Other than that, the product arrived exactly as described and pictured, and overall I think these are excellent replacement heads for anyone using a BURST toothbrush.
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Reviewed in the United States on May 24, 2026