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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
4.6 ★★★★★
Based on 2354 reviews
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Product Reviews
★★★★★ 5
Great supplement
I like the way it helps me relax to sleep and helps to keep me more focused
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
★★★★★ 5
No diarrhea
My wife had severe diarrhea using a common type of magnesium, taken at doctor's recommendation. Doctor recommended this type, L-Threonate. Totally eliminated diarrhea problem.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
★★★★★ 5
Magnesium
Helps with sleep, relaxation, and muscle cramps
* Can support mood and reduce stress
* Good for overall body function (nerves, muscles, heart)
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Reviewed in the United States on April 23, 2026
★★★★★ 4
High Quality
My husband is deficient in magnesium and these by far looked like they were of the highest quality . Not sure yet if they help him sleep better but will be purchasing them again.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Better sleep, better mood
This definitely helped my mood and sleeping. It literally changed my default. The only electrolyte that can pass the blood brain barrier. I recommend.
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Reviewed in the United States on May 9, 2026