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BB-UN300 Bottom Bracket

BB-UN300 Bottom Bracket

BB-UN300-K Bottom Bracket - English, 68 x 117.5mm Spindle, Square Taper JIS, For Chain Case

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Vendor: Shimano

BB-UN300 Bottom Bracket

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Regular price $18.00 Sale price $18.00

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Options BB-UN300-K Bottom Bracket - English, 68 x 117.5mm Spindle, Square Taper JIS, For Chain Case

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BB-UN300 Bottom Bracket

BB-UN300 Bottom Bracket

Regular price $18.00 Sale price $18.00

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BB-UN300 Bottom Bracket

Shimano BB-UN300 Square Spindle Bottom Brackets

Fits JIS square-taper cranksets
Crankarm fixing bolts sold separately
Hollow spindle

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Why We Exist

We’re here to grow the next generation of cyclists, inspire new riders, and make bikes feel accessible—not intimidating. At Stotts, there’s no snobbery and no talking down. Whether you’re a total beginner or a lifelong rider, we’ll teach, guide, and help you ride with confidence.

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