Factor AlutovsLS

The Factor Aluto, a newer entrant from 2026, aims to be a more well-rounded gravel bike than its stablemates, explicitly designed to be a 'generalist' machine capable across various surfaces. It takes design cues from Factor's lightweight O2 climbing bike and Monza road bike, suggesting a blend of efficiency and broader utility. The Aluto's development came from a recognition that 'there's not one bike to do everything,' leading Factor to create a bike that maintains its racing DNA but significantly broadens its range, particularly through increased tire clearance and a slightly more relaxed geometry compared to its hyper-specific predecessors. Conversely, the Factor LS, launched in 2020, is an unapologetically race-focused gravel bike that pulls heavily from the O2 VAM road bike's design. It’s a machine built for speed and efficiency, often described as a road bike with fatter tires. Factor's head of engineering explicitly downplayed aerodynamics in its design, instead prioritizing low weight and a stiff, tactile riding experience. The LS is a clear choice for riders whose 'gravel' often means fast, well-groomed roads or even switching to slicks for tarmac, making it a 'quiver-killer' for the performance-oriented rider seeking a single sporty drop-bar bike. While both bikes share Factor's high-end carbon construction, the Aluto seeks to address a wider audience with its 'generalist' appeal, whereas the LS doubles down on the brand's 'fast bikes' ethos for a discerning racer.

The Aluto offers a noticeably lively and agile ride, often praised for feeling remarkably like a road bike. Reviewers consistently describe its handling as "snappy, sharp," and "eager," especially on fast, flowing gravel. "Turn-in is immediate and has an ease to it that belies the stock 45 mm tires," as Velo puts it, highlighting a precision often absent in the gravel segment. This comes from its geometry, which keeps the chainstays relatively short at 420-425mm and employs a steeper head angle (72.0 degrees on a size 54) than some competitors, ensuring responsive steering. In contrast, the LS delivers a firmer, more direct ride, a "razor-sharp instrument" that's incredibly efficient but can be "unapologetically jarring" on rougher terrain, according to Cyclingnews. Velo noted its "controlled feel" on smoother surfaces, but warned that compliance "finds its limits pretty quickly once the ground gets choppy," especially on square-edged impacts. While the LS's road-bike-like stiffness makes it highly responsive to pedal inputs and excellent for accelerating, it sacrifices comfort over prolonged rough sections. Its quick handling is undeniable, allowing for tight turns and rapid changes of direction, a quality Factor explicitly designed for by eschewing docile handling even on rough surfaces like cobbles. For comfort and compliance, the Aluto strikes a better balance for varied terrain. It isn't a plush ride, but reviewers found it "balanced, if a bit firm on the dirt," thanks to slender tubes and the use of a traditional 27.2mm round seatpost, which offers more flex and compatibility with suspension options. The Aluto's ability to fit up to 47mm rear tires (52mm front) also contributes significantly to comfort and grip. The LS, optimized for 40-43mm tires, relies heavily on tire choice and pressure to mitigate its inherent stiffness. While its Black Inc integrated handlebar offers a "subtle amount of forgiveness," it remains a fundamentally stiffer platform, designed to communicate every nuance of the terrain to the rider, which can be fatiguing over long, rough efforts. The Aluto is the more forgiving and versatile of the two, while the LS demands a rider who prioritizes speed and direct feedback above all else.