Chapter 2 RIRA Ultra Carbon Disc Frameset UD & Gold - Options

The RIRA Ultra is our flagship high-performance racing frameset—engineered for riders who demand uncompromising speed, precision, and race-day readiness. Built on our proven RIRA Geometry and fine-tuned for aerodynamics. Every surface, edge, and profile is designed to reduce drag and enhance efficiency across all terrains.

Weighing just 695 g (Size M ±3%), the Ultra is meticulously constructed from over 300 layers of high-grade Toray carbon, strategically laid into custom moulds for optimal strength-to-weight ratio. The result is a feather- light chassis that reacts instantly to every watt you put down, delivering blistering responsiveness on climbs, sprints, and technical descents alike.

From the first pedal stroke to the final sprint, the RIRA Ultra brings pro-level performance within reach. Its aggressive-yet-balanced geometry provides nimble handling through corners and confident stability at high speed. Every gram has been shaved without compromising stiffness or ride quality, ensuring it feels fast and composed under maximum load. Whether you're attacking the breakaway, chasing a personal best, or hunting podiums, the Ultra is your ultimate weapon.

Aesthetically, the Ultra’s silhouette is clean, sculpted, and undeniably fast—turning heads whether you're leading the pack or out on a solo mission. It’s designed to be as functional as it is beautiful. The EVO386 bottom bracket platform provides compatibility with a broad range of cranksets, and the 27.2 mm seatpost diameter allows riders to fine-tune fit and comfort—or go all-in on weight savings with the 219 g C2 TUMU Seatpost.

Built exclusively for electronic drivetrains, the RIRA Ultra includes both SRAM UDH and Shimano Direct-Mount hangers for seamless setup across groupsets. Tyre clearance of 32 mm at the rear and 34 mm at the front ensures confident handling on rougher roads, cobbles, or broken tarmac—giving you race-level performance in real-world conditions.

The RIRA Ultra isn’t just about being light. It’s about redefining what lightweight can do. Engineered to push boundaries and built to win, it’s the purest expression of speed we’ve ever created.

FEATURES/BENEFITS

Optimised for Real-World Racing Performance

The RIRA Ultra’s ultra-light chassis gives you a clear advantage on steep climbs, helping you conserve energy and attack with confidence. Its race-tuned geometry ensures precise handling and stability on high-speed descents and technical corners—so you can ride faster, safer, and with complete control.

The proven EVO386 bottom bracket further reduces mass whilst ensuring maximum power transfer with every pedal stroke. It’s built for riders who demand efficiency without compromise.

With clearance for 34 mm front and 32 mm rear tyres, you gain the flexibility to run wider, lower-pressure tyres for better grip, comfort, and control—especially on rough or unpredictable roads.

And for those building a 1x setup, the SRAM UDH (Universal Derailleur Hanger) opens the door to SRAM’s cutting-edge Transmission system. This means you can create a cleaner, simpler, and more robust drivetrain that’s perfect for aggressive racing, minimal maintenance, and maximum performance.

FRAME SPECS

• Carbon: 100% Made in Japan by Toray
• Frame 5 Sizes: XS, S, M, L & XL
• Fork Rakes (2): XS, S (53mm offset) and M, L, XL (43mm offset)
• Frame Weight: 695g Size M +/- 3%
• Fork Weight: 395g Uncut +/- 3%
• TUMU Seatpost (Sold Separately) Weight: 219g +/- 3%
• MANA2 & 5 Bar (Sold Separately) Weight: 330g +/- 3% (MANA2 100x402mm/MANA5 100x427mm)
• Headset: 1.5" C2 Integrated
• Gear Shifting: Electric Only
• Electronic Shifting: SHIMANO® Di2, SRAM® eTAP & Campagnolo® EPS compatible
• Battery Type:
• Di2 SM-BTR-2 or BT-DN300 and EPS V3 Battery Compatible
• Tire Clearance:
• Front 32 (ISO) & 34 Practical. Rear 30 (ISO) & 32 Practical
• Brake Type: Disc Only
• Bottom Bracket: EVO386
• Thru-Axle: Flat Mount FR 12x100mm, RR 12x142mm, Sram UDH M12x1mm
• Safety Standard: EN ISO 4210:2014
• UCI Accreditation: UCI Approved