![SHIMANO BB-UN300 Bottom Bracket - English, 68 x 110mm Spindle, Square Taper JIS : Sports & Outdoors - Amazon.com SHIMANO BB-UN300 Bottom Bracket - English, 68 x 110mm Spindle, Square Taper JIS : Sports & Outdoors - Amazon.com](https://m.media-amazon.com/images/I/415ck5sQ40L._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOURANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA169%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
SHIMANO BB-UN300 Bottom Bracket - English, 68 x 110mm Spindle, Square Taper JIS : Sports & Outdoors - Amazon.com
![Finally got around to replacing a UN26 BB with a UN300. I was shocked at how decent this thing is for $20. Bearings are the same size carts as Phil Wood. But this has additional rubber seals on the cups. When this thing wears out in 20,000 miles I'm putting ... Finally got around to replacing a UN26 BB with a UN300. I was shocked at how decent this thing is for $20. Bearings are the same size carts as Phil Wood. But this has additional rubber seals on the cups. When this thing wears out in 20,000 miles I'm putting ...](https://preview.redd.it/zgp4n07jb3691.jpg?auto=webp&s=3b87d8c1fc8f8101a3f0035dc7fc25c2e7942c0d)
Finally got around to replacing a UN26 BB with a UN300. I was shocked at how decent this thing is for $20. Bearings are the same size carts as Phil Wood. But this has additional rubber seals on the cups. When this thing wears out in 20,000 miles I'm putting ...
![Shimano BB-UN300 Bottom Bracket - BSA 68mm - JIS Square Taper - 115mm (D-H) incl. crank mounting screws Shimano BB-UN300 Bottom Bracket - BSA 68mm - JIS Square Taper - 115mm (D-H) incl. crank mounting screws](https://images.bike24.net/i/mb/d3/cd/f0/shimano-bb-un300-innenlager-bsa-68mm-jis-4-kant-115mm-980860.jpg)