Material: Hight Modulus Toray t1000 Carbon Fiber. Disc Rotor: Front and Rear 140mm (if 160mm need add adapter ). Thru-axle Fork spacer : 100 12mm. handlebar weight: 373/+-15g. Fork weight: 438+/-20g. Headset: 1 -1/2 "above and 1 -1/2" below.