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the SM-RT64-S 160mm is a practical and durable choice
release predictably
roughly one cup of coffee
and dry gravel surfaces
60mm is the stem length you want in your kit
Shimano BB-UN300 Bottom Bracket - English | 68 x 113mm Spindle - Square Taper JIS Flat Bar Disc Brakes the SM-RT64-S 160mm is aWhich Bikes Use the Shimano BB UN300 68x113mm Bottom Bracket? The Shimano BB UN300 is the benchmark square taper bottom bracket, a cartridge bearing design that delivers Shimano quality and smooth, consistent rotation in a sealed unit compatible with square taper JIS cranks. The integrated chain line stabilizer reduces lateral chain movement for cleaner shifting, an often overlooked feature that matters most on multi speed bikes with wider cassette or
