Frameset
Frame
Toray®, Nippon Graphite® pan-based carbon fiber (Factor ALUTO)
Fork
Factor ALUTO carbon
Aluto SRAM RED XPLR w/ Power Meter
The Factor Aluto is a performance-oriented gravel bike designed for riders who prioritize speed and agility over rugged, technical capability. Introduced alongside the aerodynamically focused Ostro Gravel, the Aluto serves as a versatile all-rounder that leans heavily on Factor’s road racing heritage. It is built to excel on fast, mixed-surface routes, champagne gravel, and tarmac, rather than demanding singletrack.
While it retains an aggressive character, the frame incorporates practical standards like a threaded bottom bracket, a universal derailleur hanger, and a traditional round seatpost to simplify maintenance. Optimized around 45mm tires, the Aluto is a dedicated electronic-only platform that balances a lightweight carbon construction with the structural compliance needed for long days in the saddle. It suits the road-centric enthusiast looking for a highly responsive machine that blurs the line between a modern endurance road bike and a swift gravel racer.
$8,999
Build
Size
Inventory
| Stack | 547mm |
| Reach | 385mm |
| Standover height | 770mm |
| Seat tube length | 480mm |
Fit and geometry
The Aluto utilizes a balanced race geometry that sits slightly more upright than Factor’s dedicated aero gravel frames, though it remains fundamentally aggressive. A relatively steep head tube angle pairs with short chainstays to keep the wheelbase tight, resulting in quick, immediate steering inputs. This setup favors riders who prefer an active, forward-leaning posture and responsive handling over the sluggish stability of heavily raked adventure bikes.
To lower the rider’s center of gravity, Factor uses a generous bottom bracket drop, which helps anchor the bike through fast, sweeping corners. Fit customization is a strong point, driven by the Black Inc integrated barstem. The cockpit features a shallow drop and a slight inward flare at the hoods, promoting an aerodynamic position on the road while maintaining control in the dirt. Additionally, the frame uses a standard 27.2mm round seatpost with an external clamp. This traditional approach simplifies saddle height adjustments, naturally introduces a degree of flex for seated comfort, and allows riders to easily swap in a suspension or dropper post if desired.
Full specs
Groupset
Shift levers
SRAM RED AXS E1 HRD shift/brake levers
Rear derailleur
SRAM RED XPLR AXS E1 rear derailleur (RD-RED-1E-E1, Full Mount/UDH)
Cassette
SRAM RED XPLR XG-1391 (E1), 13-speed, 10-46T
Chain
SRAM RED Road Flattop E1 (CN-RED-E1)
Crankset
SRAM RED XPLR AXS E1 DUB (Wide) w/ power meter, 44T (1x)
Bottom bracket
SRAM DUB T47A
Front brake
SRAM RED AXS E1 hydraulic disc (flat-mount)
Rear brake
SRAM RED AXS E1 hydraulic disc (flat-mount)
Front rotor
SRAM Paceline X Centerlock, 160mm
Rear rotor
SRAM Paceline X Centerlock, 160mm
Wheelset
Front wheel
Black Inc THIRTY FOUR wheel
Rear wheel
Black Inc THIRTY FOUR wheel
Front tire
Goodyear Connector, 700x45c
Rear tire
Goodyear Connector, 700x45c
Cockpit
Stem
Black Inc integrated barstem (HB05), reach 75mm, drop 116mm
Handlebars
Black Inc integrated barstem (HB05), reach 75mm, drop 116mm
Saddle
Selle Italia SLR Boost Superflow Ti (as specced on complete builds)
Seatpost
Black Inc carbon seatpost (0mm or 25mm setback options)
Grips
Factor bar tape
Builds
The Aluto lineup is streamlined into two premium electronic-only builds, both utilizing SRAM’s 13-speed XPLR drivetrains in a 1x configuration. The entry point features SRAM Force XPLR, while the top tier moves to the lighter SRAM Red XPLR group. Both options include an integrated power meter and share the exact same gearing: a 44-tooth chainring paired with a 10-46T cassette. This relatively large chainring caters to high-speed road and smooth gravel sections, though riders tackling steep, loaded climbs may find themselves wanting a smaller ring.
Both builds roll on Black Inc Thirty Four carbon wheels wrapped in 45mm Goodyear Connector tires. While the wheelset is durable and arrives ready to ride, it is noted as being slightly heavy for this price bracket, presenting an obvious upgrade path for riders looking to maximize the frame's lively acceleration. The value in the Aluto lies heavily in its high-end integration and practical frame standards. Features like the threaded T47A bottom bracket and universal derailleur hanger ensure long-term serviceability, making the substantial initial investment easier to justify for riders seeking a reliable, high-performance platform.
SRAM FORCE XPLR w/ Power Meter
$7,199
SRAM RED XPLR w/ Power Meter
$8,999
Selected
Reviews
Critics consistently characterize the Aluto as a highly responsive machine that feels remarkably similar to a road bike on smooth terrain. Reviewers praise its eager acceleration and precise cornering on tarmac and well-groomed dirt, noting that it feels "alive rather than puddingy" (Cycling News) when pushed up to speed. The frame delivers a firm but balanced ride that effectively mutes vibrations without isolating the rider from the surface.
However, this agility comes with clear limitations on rougher trails. Multiple testers point out that the bike requires careful line selection on technical descents and is not intended for aggressive rock gardens. As one reviewer observed, the handling has a "precision that most gravel bikes lack" (Velo), but that same quick steering can feel demanding on chunky singletrack.
The frame’s integrated downtube storage is a recurring point of frustration. Testers found the hatch opening too small to be genuinely useful, with one noting the compartment has "limited space" (Velo) that struggles to hold standard repair kits. Despite this design quirk, the consensus points to a highly capable platform for riders who want to move fast. After a demanding five-hour event, one tester concluded that the slightly relaxed geometry compared to a pure race bike was "absolutely essential today" (YouTube), cementing its status as a fast but manageable option for long-distance efforts.
