suport bmx kink mid bb ridehubThe Kink MID BB is a complete BMX bottom bracket bearing kit , meeting the MID standard, ensuring smooth operation, durability, and precise fit . Made with high quality sealed cartridge bearings , it guarantees long life even during intense street and park riding. The kit includes cups, spacers, and spacers , enabling a perfect fit of the bottom bracket to the crankset and BMX frame. Product features: Type: MID BB (Mid Bottom Bracket) Bearings: Sealed