Shimano Bottom BracketsSQUARE TAPER The list below shows the two models of square taper, sealed bearing bottom brackets currently produced by Shimano (UN53 is roughly equivalent to 105/Deore level). These are English thread 1.37" x 24tpi , supplied without bolts (14mm bolts $1pr, 8mm flush fit Allen key bolts $6pr). Italian thread 36mm x 24tpi is also available, and we have Campagnolo units. We can also supply the best square taper sealed bearing units in the world, made by Phil Wood. UN SERIES - UN26 $22
BB-UN26 BOTTOM BRACKET 68x110mm BB-UN26 BOTTOM BRACKET 68x113mm BB-UN26 BOTTOM BRACKET 68x117mm BB-UN26 BOTTOM BRACKET 68x122mmW/BOLTS BB-UN26 BOTTOM BRACKET 68x123mm UN SERIES - UN53 $40
IBBUN53B07 BB-UN53 BOTTOM BRACKET 68x107mm BBUN53B10 BB-UN53 BOTTOM BRACKET 68x110mm BBUN53B13 BB-UN53 BOTTOM BRACKET 68x113mm IBBUN53B15 BB-UN53 BOTTOM BRACKET 68x115mm IBBUN53B18 BB-UN53 BOTTOM BRACKET 68x118mm IBBUN53B22 BB-UN53 BOTTOM BRACKET 68x122mm BBUN53B27 BB-UN53 BOTTOM BRACKET 68x127mm
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