After 2 years of design and development, improvements in 28 different details, the long-awaited Bigrock Aero frameset arrives. Regarding material selection, we focus on the stability of product quality and do not blindly pursue low cost and low price. Korean Hyosung carbon fiber materials is used for the new aero frameset, both T800 and T1000 carbon fiber are for frame production, achieving a perfect combination of rigidity and flexibility while being lightweight. An aero frame with integrated streamlined design. The curved design of the head tube is connected with the front fork in a silky way, allowing the airflow to pass through the body more smoothly and faster. The seat tube fits the curvature of the rear wheel better, reducing the intersection of air resistance, thus achieving a more aerodynamic effect. The Bigrock Aero Frameset is our most affordable aero machine on offer with a great finish putting many mainstream brands to shame. SPECIFICATIONS: • Frame Material: T800 + T1000 • Thru Axles: Front: 12×100, Rear: 12×142 • Headset: 1-1/8″ to 1-1/4″ (Included) • BB: T47 (Threaded) 85.5mm • Front derailleur: Bolted on front hanger • Tire clearance: Max. 700*30C • Sizes: 46, 49, 51, 53, 55, 57, 59 • Weight: 920g - Size 49 (Not including metal accessories) • Weight Fork: 350g (Not including metal accessories) • Brakes: Disc Brake • Shifting: Di2 / eTap or Mechanical Shifting (Fully internal only) • Contents: Frame, Fork, Seatpost, Headset • Fully integrated • Compact Geometry Available with optional Bigrock SKYLINE carbon fiber integrated handlebar • Weight: 338g (90*400mm) • Accessories: Garmin computer holder with Gopro tripod Frame weights are listed without alloy parts/accessories: Size 46 : 900g ±5% Size 49 : 920g ±5% Size 51 : 940g ±5% Size 53 : 960g ±5% Size 55 : 980g ±5% Size 57 : 1000g ±5%