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Ships within 48 hours · Estimated delivery Nov 13 - Nov 18
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Description
fitnessbike shimano ultegra Chapter2 RIRA - Shimano Ultegra Di2Chapter2 RIRA Complete Bike Precision Performance, Inspired by the Ride The Chapter2 RIRA Complete Bike with Shimano Ultegra Di2 is a race ready machine designed for pure speed, effortless shifting, and precise handling. Whether youre tackling a fast paced criterium, a long endurance ride, or an all out attack on a climb, this build delivers the perfect balance of aerodynamics, stiffness, and comfort to maximize your performance. Precision Carbon
Chapter2 RIRA Complete Bike – Precision Performance, Inspired by the Ride
The Chapter2 RIRA Complete Bike with Shimano Ultegra Di2 is a race-ready machine designed for pure speed, effortless shifting, and precise handling. Whether you’re tackling a fast-paced criterium, a long endurance ride, or an all-out attack on a climb, this build delivers the perfect balance of aerodynamics, stiffness, and comfort to maximize your performance.
Precision Carbon Engineering for Ultimate Efficiency
Built from 100% Toray carbon fiber in Japan, the RIRA frame and fork are engineered to provide explosive power transfer, optimal aerodynamics, and responsive handling. The T47 ceramic bottom bracket enhances efficiency, ensuring that every watt of effort translates to smooth, powerful movement. The fully integrated MANA5 handlebar and stem create a sleek, cable-free cockpit, optimizing airflow while allowing for customized width and length options. Paired with the TUMU carbon seatpost and TCP 3D-printed carbon saddle, the RIRA ensures long-distance comfort while maintaining an aggressive race posture.
Shimano Ultegra Di2 – Pro-Level Performance Without Compromise
The Shimano Ultegra Di2 12-speed groupset brings lightning-fast, wireless shifting and top-tier braking performance, making this build a true high-performance race machine. With compact (50/34) and mid-compact (52/36) crankset options paired with 11-30T or 11-34T cassettes, riders get the versatility to power through flats, attack climbs, and maintain control on technical descents. The Shimano Ultegra hydraulic disc brakes with CL800 rotors (140mm or 160mm) ensure consistent, powerful stopping power in all conditions.
UNAAS HARD2 Carbon Wheels – Aero Meets Stability
To maximize speed and efficiency, the RIRA Complete Bike is equipped with the UNAAS HARD2 50mm carbon wheelset, delivering the perfect balance of lightweight acceleration, aerodynamic performance, and stability in crosswinds. Wrapped in Goodyear Eagle F1 R tires (700x28c or 700x30c, available in black or tan wall), this setup ensures low rolling resistance, exceptional grip, and a smooth, confident ride across all road conditions.
Whether you’re a seasoned racer, an ambitious Gran Fondo rider, or simply someone looking for an ultra-refined road machine, the RIRA Complete Bike with Shimano Ultegra Di2 is built to elevate your ride and deliver top-tier performance every time you hit the road.
Key Specifications
- Frame & Fork: Chapter2 RIRA Carbon – 100% Made in Japan by Toray
- Cockpit: MANA5 Integrated Handlebar/Stem (Customizable Length + Width), Chapter2 Black Bar Tape
- Drivetrain: Shimano Ultegra Di2 12-speed (50/34 or 52/36 Crankset + 11-30 or 11-34 Cassette)
- Brakes: Shimano Ultegra Di2 Hydraulic Disc, Shimano CL800 Rotors (140mm or 160mm)
- Wheels: UNAAS HARD2 Carbon Wheelset – 50mm
- Tyres: Goodyear Eagle F1 R (700x28c or 700x30c) – Black or Tan Wall
- Bottom Bracket: Wishbone T47 Ceramic Bearings
- Saddle & Seatpost: TCP 3D Printed Carbon Saddle, Chapter2 TUMU 27.2mm Carbon Seatpost
The RIRA Complete Bike with Shimano Ultegra Di2 delivers a winning combination of cutting-edge technology, lightweight carbon engineering, and premium components, making it the perfect choice for riders who demand the best in speed, control, and efficiency.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Super cute, comfortable, practical, love that they are slip on
Size: 10.5, Color: Tobacco/Black
I have worn these 2-3 times already. The first day was a school/work day so I was on my feet 9 hours and the only issue I had was with the side of the boot rubbing against my ankle. I just make sure I wear socks high enough to cover my ankles or jeans that go into the boots now for long wear days.
Absolutely love them! They keep my feet dry in this snow( we live in Michigan). I had been looking for a pair like this for awhile now and was getting super frustrated that I couldn't find my size in any that I liked. I saw that they had these available in a 10.5 and I wear 11. I looked at the Sorel website reviews (since the amazon ones weren't super helpful on sizing) and they said that the boots ran big so I took a chance on the 10.5 fitting me. They fit perfect. I have long narrow feet but I could see where they would be tight or uncomfortable on someone with wider feet. I've been trying to find a pair for my mom now since she has boot envy.
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Reviewed in the United States on January 27, 2026
★★★★★ 5
Worth it.
Size: 8.5, Color: Crushed Clay/Gum 2
Love all my Sorels. These were really cute, good color, comfortable, warm, fit well, good quality and sturdy. I would order again.
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Reviewed in the United States on March 26, 2026
★★★★★ 5
Fantastic Boots!
Size: 8.5, Color: Redwood/Gum 10
Completely satisfied with these boots. True to size, well made, comfortable from the get-go; not break in needed. Waterproof- really. The Red Suede has withstood a nasty winter season & still looks great. Good traction. I like the ankle height which looks good with long, mid length pants & leggings. I love the easy slip on/off aspect..made getting ready for dog walking easy. I 100%recommend!
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Definitely worth the price
Size: 6.5, Color: Black/Black
Absolutely love these boots! I originally bought them to wear in NYC in December & they did not disappoint. They were comfortable, cute, durable and worked well in the slush/snow. The traction on the bottom is also nice! They kept me warm with wool socks. I wear them almost daily now. Perfect for everyday. easy to wear with variety of outfits. Good every day shoe.
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Reviewed in the United States on January 3, 2026
★★★★★ 5
Snagged a deal
Size: 7, Color: Redwood/Gum 10
I waited and waited to get these boots! I knew I was chancing it, but they went on sale, and I snagged them! I am a size 7, and they fit nicely with socks. a little loose, barefooted, but what psycho wears boots without socks? They are comfortable and really well-made.
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Reviewed in the United States on April 8, 2026