The R/1 Ultegra brings a legacy of competition performance plus the unmatched qualities only a Super Magnesium frame can deliver, resulting in a seriously formidable tarmac machine. The aero-inspired Model R/1 Road optimizes technology and design for pavement - where speed, aerodynamics, weight and agility make all the difference. With a weight and performance level other non-ferrous metal frames cant quite achieve, the 1250g Allite Super Magnesium frame is meticulously crafted with progressive geometry that results in the perfect fit no matter the rider. Utilizing VAAST V-Fit parameters for comfort and control, the head tube and seat tube angles are carefully chosen to place the rider in an optimal, confident position and ensure proper trail for neutral steering geometry. While the R/1 adopts the use of VAASTs proprietary V-Fit technology like its award-winning A/1 predecessor, unlike the A/1, the R/1 tube profiles re-imagine Super Magnesium capabilities resulting in a 30% aerodynamic performance gain over conventional round tube frames. Additionally, clearances are ample enough to fit up to 30mm tires, or to allow fenders to be fitted with conventional 25/28mm tires. All of this, combined with lightweight aluminum wheel sets, and the proprietary carbon fork and seatpost, rounds up to a complete package for a ride worthy of getting lost in the wind for countless miles. Light, aerodynamic, fast - the all new VAAST Model R/1. Specifications Frame: Road 700c disc, AE81 SuperMag, VAAST Road geometry, internal cable routing, fender ready. Up to 30mm tire clearance Frame Weight: 1250g Fork: VAAST Road full-carbon disc. Up to 30mm tire clearance Tires: Vittoria Rubino Pro, 700 x 25mm w/Ultralight tubes Max Tire Clearance: 30mm Rims: VAAST Aero 30mm Aluminum, Tubeless Ready Rotors: Shimano RT800 160mm Crank: Praxis Zyante carbon 50/34t w/ M30 axle Cassette: Shimano Ultegra R8000, 11-speed, 11-30t Shifters: Shimano Ultegra Disc R8020 RD: Shimano Ultegra R8000, 11-speed FD: Shimano Ultegra R8000, braze-on Chain: KMC X11 11-speed Brakes: Shimano Ultegra R8070, hydraulic disc Bottom Bracket: Praxis T47 IB Enduro Bearings Hub F: Sealed cartridge bearing, 12 x 100mm thru axle, Centerlock, 24H Hub R: Sealed cartridge bearing, 11-speed, 12 x 142mm thru axle, Centerlock, 24H Spokes: Bladed Double butted stainless Axles: VAAST M12 w/Removable lever Handlebar: VAAST Aero Carbon Stem: VAAST Aero Pro, 3D forged, 8 degree Grips / Tape: VAAST Anti Slip Seat Post: VAAST Carbon fiber, (300mm 49/52, 350mm 54/56/58/60) Saddle: ProLogo Scratch M5 PAS w/T2.0 rails.