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From $6,211.25
Chapter 2 RIRA ULTRA - Shimano Dura-Ace Di2 - Performance Road Bike—
$6,211.25
The Story
Chapter2 RIRA ULTRA Complete Bike – High Performance Racing Bike
The Chapter2 RIRA Ultra Complete Bike with Shimano Dura-ace 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.
The frameset weighing just 695g (Size M ±3%), the Ultra is meticulously crafted from over 300 layers of precision-placed Toray carbon in custom molds. The result? A razor‑sharp chassis that delivers blistering responsiveness and race-winning 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 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 Dura-ace Di2 – Pro-Level Performance Without Compromise
The Shimano Dura-ace 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 Dura-ace hydraulic disc brakes with CL800 rotors (140mm or 160mm) ensure consistent, powerful stopping power in all conditions.
Winspace HYPER LIGHT Carbon Wheels – Aero Meets Stability
To maximize speed and efficiency, the RIRA Ultra Complete Bike is equipped with the Winspace HYPER LIGHT carbon wheelset, the lightest in the Winspace range weighing only 1250g. With optimised rim depths 46mm front and 55mm rear delivering the perfect balance of lightweight acceleration, stability and aerodynamic performance. 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 Ultra is built to elevate your ride and deliver top-tier performance every time you hit the road.
Specifications
- Frame & Fork: Chapter2 RIRA Carbon – 100% Made in Japan by Toray
- Cockpit: MANA5 Integrated Handlebar/Stem, Chapter2 Black Bar Tape
- Drivetrain: Shimano Dura-Ace Di2, 12-speed (52/36T Crankset, 11-30T or 11-34T Cassette)
- Brakes: Shimano Dura-Ace Di2 Hydraulic Disc
- Wheels: Winspace HYPER LIGHT 46mm Front/55mm Rear
- Tyres: Goodyear Eagle F1 (700x28c or 700x30c)
- Bottom Bracket: Wishbone EVO386 Ceramic Bearings
- Saddle & Seatpost: TCP 3D Printed Carbon Saddle, TUMU 27.2mm Carbon Seatpost
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Chapter2 RIRA ULTRA Complete Bike – High Performance Racing Bike
The Chapter2 RIRA Ultra Complete Bike with Shimano Dura-ace 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.
The frameset weighing just 695g (Size M ±3%), the Ultra is meticulously crafted from over 300 layers of precision-placed Toray carbon in custom molds. The result? A razor‑sharp chassis that delivers blistering responsiveness and race-winning 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 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 Dura-ace Di2 – Pro-Level Performance Without Compromise
The Shimano Dura-ace 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 Dura-ace hydraulic disc brakes with CL800 rotors (140mm or 160mm) ensure consistent, powerful stopping power in all conditions.
Winspace HYPER LIGHT Carbon Wheels – Aero Meets Stability
To maximize speed and efficiency, the RIRA Ultra Complete Bike is equipped with the Winspace HYPER LIGHT carbon wheelset, the lightest in the Winspace range weighing only 1250g. With optimised rim depths 46mm front and 55mm rear delivering the perfect balance of lightweight acceleration, stability and aerodynamic performance. 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 Ultra is built to elevate your ride and deliver top-tier performance every time you hit the road.
Specifications
- Frame & Fork: Chapter2 RIRA Carbon – 100% Made in Japan by Toray
- Cockpit: MANA5 Integrated Handlebar/Stem, Chapter2 Black Bar Tape
- Drivetrain: Shimano Dura-Ace Di2, 12-speed (52/36T Crankset, 11-30T or 11-34T Cassette)
- Brakes: Shimano Dura-Ace Di2 Hydraulic Disc
- Wheels: Winspace HYPER LIGHT 46mm Front/55mm Rear
- Tyres: Goodyear Eagle F1 (700x28c or 700x30c)
- Bottom Bracket: Wishbone EVO386 Ceramic Bearings
- Saddle & Seatpost: TCP 3D Printed Carbon Saddle, TUMU 27.2mm Carbon Seatpost
