julio 22, 2026
This is a new-in-box Shimano BB-UN51 sealed-cartridge bottom bracket. It has a 68mm shell width and 127mm square-taper axle length, making it a good choice for MTB or road triple crankset setups. The cups are BC 1.37 threaded (English/ISO standard). The box includes Shimano's installation guide. Measurements are approximate, to the best of our ability. Colours may vary on different monitors/devices. Our premises are smoke free. If you want to purchase more than one item, please go ahead and purchase and pay. I combine shipping and will promptly refund your shipping overage. Please use the shopping cart for combo shipping.