Premium 24 Premium 38 Ultra Road 24 Ultra Road Clincher 28 Ultra Road Clincher 28/45 Weight (+/- 5 %) 835 g/set 985 g/set sub 800 g/set 1065 g/set 1130 g/set Rims ax-lightness SRT24 215 g/piece ax-lightness Stream 38 290 g/piece ax Ultra Road 24 195 g/piece ax U28C < 200 g/piece front: U28C rear: U45C Rim material Full Carbon Tire type Tubular Clincher, tubeless Brake type Rim brake Rim depth 24..