Box One X5 Pro Tapered Carbon BMX Race Fork-20"-1 1/8"-1.5"-20mm Pivotal Seats We recommend replacement every 6

We recommend replacement every 6 months due to chain wear

Pinned and welded seam

Spindle size: 19mm spindle

INTERNALS: 4 sealed bearings

Box One X5 Pro Tapered Carbon BMX Race Fork-20"-1 1/8"-1.5"-20mm Pivotal Seats We recommend replacement every 6The Box One X5 Pro Carbon Fork 20x1. 5" to 1 1 8" 20mm is the solution if you are looking for the pinnacle of bike control. Instantly responsive and engineered using Boxs Oversized Technology philosophy, these forks are made with high modulus unidirectional carbon fiber with a tapered aluminum steerer tube and cold forged dropouts. In order to achieve the best pedal response, we recommend pairing these with Box's other Oversize Technology components.