Headset Size:Top 1-1/8 (41.8mm) Down 1-1/2(52mm). Bottom Bracket:BB386, 4686.5mm. Brake: Flat Mount Disc Brake, 140mm Rotor. Max Tire Size: 70040C or 27.52.1. Rear Hole Spacing: 14212mm Thru Axle.Fork Spacing: 10012mm Thru Axle. Frame Weight: 1100g +/-50g (54cm). Frameset Including:Frame, Fork, Seatpost, Headset, Clamp, Thru Axle. Suitable Derailleur: Di2 And Mechanical Both. This item is in the category "Sporting Goods\Cycling\Bicycle Frames". The seller is "spcycle1" and is located in this country: CN. This item can be shipped worldwide.