“Chapter 2 Bikes is excited to introduce the RIRA, a brand-new All-Road Racing chassis designed to elevate your riding experience. More than just a collection of performance stats and data, the RIRA delivers a ride that connects with the senses—it’s about the beauty of the journey, the challenge of the climb, and the thrill of the descent.” – Chapter 2 Bikes
“In an industry filled with claims of the “fastest bike” or “X watts saved,” the RIRA takes a different approach. While Chapter 2’s engineers meticulously optimized the bike’s weight, stiffness, and aerodynamics, the RIRA is designed to inspire your passion for riding. It’s a bike that not only performs at the highest level but also speaks to your soul.”
950g Performance-Tuned Toray Carbon Frameset
“Lightweight and stiff, the RIRA is crafted with the highest quality Toray T1100 carbon, making it ideal for competitive riding. Available in five sizes.”
Increased Stiffness
“The RIRA boasts a 22% stiffer headtube and 12% increased bottom bracket stiffness over its predecessor, the TOA, ensuring unmatched power transfer and responsiveness.”
Aerodynamic Enhancements
“Featuring an optimized headtube and flat-back seattube, the RIRA maximizes torsional stiffness while minimizing drag for faster, more efficient rides.”
Precision Geometry
“The RIRA’s linear bottom bracket drop and optimized stack and reach ensure precise scaling and fitting for a wide range of riders, making it versatile across different terrains.”
Fully Integrated Cable Routing & SRAH UDH Compatibility
“With clean, fully integrated cables and compatibility with SRAM’s Universal Derailleur Hanger, the RIRA offers aesthetic and functional benefits for electronic groupsets.”
Industry Standard 27.2 Seatpost
“For flexibility in dialing in the perfect bike fit, the RIRA uses a standard 27.2mm diameter seatpost, with the option to upgrade to the Chapter 2 TUMU seatpost, weighing in at 219g.”
Generous Tire / Tyre Clearance
“The RIRA supports up to 34mm tires in the front and 32mm in the rear, offering ample room for wider, high-volume tires to improve ride comfort without sacrificing speed.”
Back to Basics, Built for Performance
“The RIRA is a return to the fundamentals of racing—balancing agility, power, and handling to create an exhilarating ride that sharpens your senses. Whether you’re chasing a personal best or just riding for the pure joy of it, the RIRA’s sleek design and razor-sharp performance will make it the talk of any group ride.”
“With a T47 85.5 bottom bracket standard, the RIRA delivers outstanding stiffness and compatibility with various industry-available cranksets. By sticking to the industry-standard 27.2mm seatpost, riders can easily customize their bike fit while optimizing weight savings.”
“The RIRA frameset, equipped with a SRAM UDH hanger and Shimano Direct Mount Hangers, is designed exclusively for electronic groupsets. Accommodating tires up to 34mm in the front and 32mm in the rear, it offers both speed and comfort in any riding condition.”
Additional Photos
Learn more at the Chapter 2 Bikes Website