“Serena began with a question I have returned to for years: how should the ultimate climbing bicycle feel? Not only when attacking a mountain, but also during those rare moments when the bicycle, the body, and the climb stop feeling separate from one another.
Serena was created to bring both sensations together.”
Santiago Toro - Founder and Lead Product Designer
Born Within the Mountains of Colombia
In Colombia, climbing is not a discipline reserved for particular days. Roads rise more often than they flatten, and the mountains simply become part of how life and riding happen here. Weather, light, gradients, and road surfaces can all change within a single ascent, making every climb a different experience.
Serena was developed through this constant exposure. Designed, built, and tested in the mountains surrounding our workshop in El Retiro, it reflects the two sensations we continually encounter while climbing: the desire to push against the mountain and the quieter feeling of moving in complete connection with it.
To Attack the Mountain.
To Float Through It.
The Dynamics of Climbing
Rather than approaching climbing through weight alone, we considered the bicycle as a complete system. Materials, shapes, geometry, construction, and components were developed together to create a frame that feels light and reactive when the gradient rises, yet composed enough to support the rider through long, sustained efforts.
Serena is not simply a lighter version of an existing Scarab. It is an entirely new platform, created specifically for the mountain.
It is the physical expression of The Dynamics of Climbing, our ongoing study of how a climbing bicycle should feel, react, and handle.
01. MATERIALS
Custom-Drawn for Serena
Steel became the foundation of Serena because of its balance of compliance, spring-like return, precision, and durability.
Working alongside Columbus, we developed a new family of custom-drawn Spirit tubes specifically for the platform. Diameters, wall thicknesses, tapers, and shapes were refined together to reduce weight and vibration while maintaining a precise and reactive response under load.
The result is a frame that remains connected to the road without transmitting all of it, supporting the rider through long climbs while responding immediately when the effort changes.
02. Shapes and construction
Every Shape Has a Purpose
Serena’s silhouette is defined by the balance between vertical compliance and torsional stiffness. From the side, its tapered top tube, slender seat stays, and restrained fork profile create a light and refined structure. From above, broader tube profiles and carefully developed junctions provide the support required during accelerations and out-of-the-saddle efforts.
A new custom-machined, two-piece head tube creates a wider and more precise connection with the top tube and down tube while reducing visual mass. Weight-relieved details throughout the bottom bracket and new 3D-printed stainless steel dropouts allow material to remain only where it serves the frame.
The result is a highly refined silhouette in which construction, performance, and appearance follow the same idea.
04. Geometry
Geometry Beyond Fit
Serena’s geometry begins with the individual rider, but extends beyond position and fit. Each frame is developed to feel stable through long seated efforts while allowing the bicycle to move naturally beneath the body when the rider rises out of the saddle. Wheelbase, front center, trail, and chainstay length are balanced to create a responsive bicycle that never requires unnecessary correction.
The same geometry defines the descent. Steering inputs translate directly and predictably, allowing the rider to trace a line with confidence after the accumulated effort of the climb.
Climbing and descending were never treated as separate conditions. Serena was designed for the complete mountain.
05. The Art of Custom
Built for One Rider
Every Serena is developed around the person who will ride it. Fit, geometry, tubing, and construction are considered together, allowing the frame to respond not only to the rider’s measurements, but also to the way they climb, descend, and move across the bicycle.
Through Scarab’s co-creation process, each Serena becomes a singular interpretation of the platform. Rider-specific in its proportions and behavior, then painted by hand in our workshop in El Retiro.
06. The First Series
Limited Edition
The first twenty-five Serena bicycles form the First Series: a collection of rider-specific complete builds, each carrying a permanent handmade identifier unique to that bicycle.
Developed as the first and most complete expression of Serena, the series brings together Scarab’s framebuilding, paint, and co-creation process with a selection of climbing-focused components.
Serena Notes and Specs
Every Serena is developed and built one at a time in El Retiro, Colombia. Geometry, tubing selection, construction, and paint are shaped around the individual rider while preserving the defining characteristics of the platform.
Frameset material
Custom-drawn Columbus Spirit steel tubing developed specifically for Serena.
Bottom Bracket
68mm T47 Bottom Bracket
Dropouts
3D-printed stainless steel dropouts with UDH compatibility.
Thru-Axle Round dropouts.
Fork
Carbon Integrated Road Fork
Max tire clearance
700x32C
Cable Routing
Fully integrated cable routing.
What is Included with the frameset?
FRAME
Your frame with the geometry and paintjob selected.
FORK
Carbon, painted to march fork.
HEADSET
Wolftooth headset
SEATPOST CLAMP
28.6mm Wolf tooth seatpost clamp.
FRONT & REAR AXLES
All framesets are supplied with front and rear Thru-Axles.
TOUCH-UP PAINT
Every frameset comes with a small set of touchup paint and framesaver.
Order Serena
Serena is available as a rider-specific frameset or as a complete bicycle developed around the rider’s fit, objectives, and preferred components.
Framesets starting from: $4850
Each project begins with a private consultation where we learn more about the rider, discuss the intended build, and introduce Scarab’s co-creation process.
Stories from Scarab
Notes on bicycles, craft, riding, and the places that continue to inspire us.