If you're like us, you love riding rough terrain but live in a more urban jungle. So you need a bike that's fast on the road and capable off-road.
We designed the Ultra to fit 55-61mm wide tires—the entire aero package is built around them to keep you going fast on the road. If you ride on less extreme terrain, you can also fit 700c tires up to 45mm WAM (With As Measured) on the Ultra.
REALFAST AERODYNAMICS
The Ultra was our toughest aerodynamic challenge to date. Start with huge 55-61mm tires and then make the bike aerodynamic. There's nothing we can do about the tires; they're big, and the knobs don't help. What we can do is take the airflow coming off the front wheel and try to capture and redirect it. That's why you'll see the 60mm-wide downtube positioned close to the front wheel, which widens even more as it approaches the bottom bracket.
Chassis:
ULTRA
Frame Material: Unidirectional Carbon, High Modulus/High Strength with Integrated Headset, 1-1/8"+1.5" Sealed Bearings, 36°
Fork: Fango Ultra Thru-axle100x12 front - 142x12 rear
Handlebar: 3T Superergo Pro (XXS: 38cm - 51: 40cm - 54&56: 42cm - 58&61: 44cm)
Handlebar Stem: 3T Apto Stealth (XXS:70mm - 51:80mm - 54:90mm - 56:100mm - 58:110mm - 61:120mm)
Rear derailleur: Shimano GRX RD-RX822 SGS RD+ 12s
Crankset: Shimano FC-RX610-1 40T (XXS: 165mm, 51: 170mm, 54&56: 172.5, 58: 175mm)
Brake/shifter levers and brake calipers: Shimano BR-RX400 (SM-RT64 160mm rotors) Shimano GRX ST-RX610 12s levers
Cassette: Shimano CS-M6100-12 10-51T
Tires: Pirelli Cinturato Gravel M 700x40
Wheels: Fulcrum Rapid Red 900, 700c, 22mm internal channel, tubeless ready (upgrade to 3T Discus 45|40, 45|32, Plus i28 possible)
Seatpost: 3T Carbon 27.2 - Zero offset
Sell: Selle Italia Model X Superflow
