Cipollini RB1K The One Rim Brake Frameset
-
RA price match promise
-
Pay later with
,and
Pickup available at RA Cycles - Brooklyn
Usually ready in 24 hours
Questions about this product?
Questions about this product?
What size do I need?
What size do I need?
Schedule a Bike Fit in Walnut Creek, CA.
Schedule a Bike Fit in Brooklyn, NY. Please call 718-636-5242
Cipollini RB1K The One Rim Brake Frameset
Cipollini RB1K The One Rim Brake Frameset Info
Mario Cipollini won 42 Tour de France stages. He won Milan–San Remo four consecutive times. He won the World Road Race Championship. When the man who built a career on power, speed, and an uncompromising approach to racing decides to put his name on a single frameset and call it "The One" — the bike he would choose if he could only ride one — that means something. The Cipollini RB1K The One Rim Brake Frameset is that bike. Built from aerospace-grade Toray T1000 carbon in a true monocoque construction, made entirely in Italy, and raced to UCI victories by the Alé BTC Ljubljana WorldTour team, the RB1K The One is not a road bike designed by committee. It is a racer's machine, built by a racer, for riders who want the fastest, stiffest, most alive frame at this price.
True Monocoque Carbon — One Mold, No Compromise
Most carbon frames are multi-piece constructions — separate sections of carbon bonded together at critical junctions. The RB1K The One is not. It is a true monocoque: the entire frame is built in a single mold, one continuous carbon structure from head tube to dropout, with no bonded sections and no glued joints. This is harder to manufacture and requires more precision, but it eliminates the weight and potential failure points of adhesive-bonded construction.
The carbon itself is Toray T1000.M46J — one of the highest-modulus fibers commercially available, used in aerospace and motorsport applications. Cipollini's artisan suppliers work with the same carbon material networks as Ducati and McLaren. The 1K finish is not just aesthetic: it reflects the fine, tight fiber weave used throughout the layup, producing more consistent fiber orientation and better fatigue resistance than coarser 3K or 12K weaves. The frame weighs approximately 950g unpainted in size medium — 120g lighter than the already-celebrated RB1000 predecessor, and 20% stiffer across the board. The fork matches the frame's carbon grade: Cipollini's own T1000 carbon fork with a tapered 1½" to 1¼" steerer.
The frame is genuinely made in Italy — one of the last premium road framesets that can legitimately claim it. Designed in Milan. Carbon formed in Venice. Layup completed in Florence. Painted in Pisa. Final assembly in Verona. At a time when most "Italian" brands have moved production overseas, Cipollini has not. That commitment shows in the fit, finish, and tactile quality of every frame that leaves the workshop.
Race Geometry Designed to Sprint and Climb
The RB1K The One's geometry makes no apologies. Short chainstays — 405mm across most sizes, 408mm at the largest — deliver the snap and acceleration expected of a classics specialist. The seat tube angles run steep (75° at the smallest sizes, 73° at the largest), putting the rider in an aggressive, forward position optimized for power delivery at high cadence. Head tube heights are kept deliberately low across all seven sizes (XXS through XXL), requiring and rewarding riders who want a flat, stretched-out race position.
Head angles progress from 71° at XXS to 73.5° at XXL — a range that gives smaller sizes a slightly more stable feel without softening the directness that defines the bike at every size. Stack and reach numbers reflect a frame designed around actual WorldTour race geometry, not mass-market comfort assumptions. This is a bike that wants to be ridden fast, in a low position, with intent.
Despite its uncompromising race character, the RB1K The One accommodates up to 28mm tires — wider than expected for a frame this aggressive, and meaningful for riders who want to run 25mm or 28mm on rougher road surfaces without changing frames. BikeRadar noted the fork was reshaped from the previous generation specifically to improve ride compliance at speed, allowing the bike to function across varied terrain rather than exclusively on perfect tarmac. The direct-mount rim brake mounts are clean, stiff, and aerodynamically integrated — no bolt-on adapters, no external hardware.
What's Included and Why Rim Brakes Still Matter
The frameset package is comprehensive. Included: the RB1K The One frame, the matched T1000 carbon fork, Cipollini's own carbon seatpost (500mm length, 25mm setback, with a zero-setback version also available), an integrated conical headset, and the hidden seatpost clamp mechanism. The seatpost clamp is recessed into the frame — no external bolt hardware, no aerodynamic interruption at the seat tube junction. The aero headset top cap adds +18mm of height adjustment without visible spacers, providing fit flexibility while maintaining a clean visual line.
The rim brake version of the RB1K The One is increasingly rare at this level. Most manufacturers have phased out rim brake options in the premium tier. For riders who want them — and there are strong reasons to — the RB1K delivers. Rim brakes are lighter. They are mechanically simpler. They are easier to service, easier to travel with, and they provide direct, unfiltered feedback from the road surface. On a frameset this stiff and this responsive, that feedback is part of the experience. The Alé BTC Ljubljana WorldTour team recorded 17 UCI victories on Cipollini framesets in 2021, with key riders including Marta Bastianelli and Mavi Garcia. The competitive credentials are real.
Three colorways are available in all seven sizes: Carbon/Silver/Red Metal Shiny, Black/Carbon/Silver Shiny, and White Pearl/Carbon/Blue Shiny. The RB1K The One is available at RA Cycles in XXS through XXL, covering riders from approximately 157 to 204cm. It is a racing machine for riders who know exactly what they want — and are ready to ride accordingly.
Cipollini RB1K The One Rim Brake Frameset - Specifications
*Specifications are subject to change.
Cipollini RB1K The One Rim Brake Frameset Geometry
