Onbicle Cycle Head Set Heavy Duty Bicycle External Bearing Headset Head Cup Set Bicycle Brake Disk

1. 44mm MTB Road Bike Sealed Bearings Headset 1-1/8" Fit Straight Frame Head Tube 2. 1-1/8" Heavy Duty Headset Top Cap Bearings, Threadless Stem Tapered Sealed BMX Bearing Nuts for Mountain MTB Bike 3. Material: Forged and CNC machined steel cups and oversized 1/4 inch bearings in the lower cup Specification: 44 MM (applicable to 44 MM frame head tube + 28.6 MM fork head tube) Durable, smooth, light-weight, long-lasting headset, representing the perfect balance of performance. Suitable for MTB, road bike, convenient and durable. 4. Fit frame under the inner diameter of the head tube is 44mm (common in aluminum mountain bike frame, but also some road bike frame), match 28.6mm straight tube fork, or 1.5 standard taper pipe fork.