Condition: New / Unused Brand: Shimano Model: BB-UN101-K Thread Type: BSA (1.37” x 24T, English thread) Shell Width: 68 mm Axle Length: 123 mm Spindle Type: Square Taper (JIS) Material: Steel / Aluminium Made in: China Not original box bulk box. High-quality Shimano bottom bracket suitable for square taper cranksets such as FC-TY301, FC-M171, and other compatible models. Durable sealed cartridge design ensures smooth rotation and long life. ✅ Genuine Shimano component ✅ 68mm BSA English thread ✅ 123mm axle length – compatible with many 6/7/8-speed bikes ✅ Maintenance-free sealed cartridge
