Newly re-issued Tange Seiki MX320 aluminum alloy BMX headset. * Model: MX320 (A Porkchop BMX exclusive!) * Color: BLUE ANODIZED * This headset fits 1" threaded forks. * 32.7mm diameter bearing cups (where they press into the headtube) * Threading is 1" X 24TPI. * Crown race size is 26.4mm (this is the part that installs on the fork - some forks are 27.0mm.. MEASURE FIRST) * Stack height 40mm (+/- 0.5mm) (if you need a higher stack height, consider our 1" spacers which can be run under the lock nut and are a very close color match) * Sealed cartridge bearings (larger lower bearing to take the additional force on the bottom cup) * Not gyro compatible (upper portion outer diameter is 44.3mm) * MADE IN JAPAN * NOTE: This headset will NOT fit road bikes, Mini's, or Landrace cruisers.