Designed with Oversized Technology, the Box One X5 Fork features a tapered 7000 series alloy steerer tube and a 20mm through-axle cold-forged bonded dropoutsEvery piece of unidirectional carbon fiber is placed strategically to optimize weight, strength, and stiffnessInternal butterfly steerer tube and fork crown interfaceCold forged and bonded dropoutsIncludes Box One Stem Lock and fork adapters* Use of a star nut voids the warranty for this productBMX20`Threadless1-1/8 to 1.5`NoneCarbon/AL7000Black32mm39.8mm20mm100mmUPC/EAN/GTIN: 616043831756