The Ventum NS1 Force AXS emerges as a contender in the competitive race bike segment, showcasing a blend of impressive rigidity, aerodynamic profiling, and a geometry tailored for speed. This bicycle is equipped with high-end components, promising exhilarating performance for those who prioritize aggressive riding on pristine asphalt. However, its significant stiffness comes at the cost of ride comfort, a factor that might deter riders on less-than-perfect road conditions. This detailed review delves into the NS1's attributes, evaluates its on-road behavior, and assesses its market value against rival offerings, highlighting its agile handling and efficient power delivery while acknowledging its firm ride quality.
Ventum NS1 Force AXS: Detailed Evaluation
On Sunday, November 8, 2026, cycling enthusiast and reviewer Stu Kerton embarked on a comprehensive test ride of the Ventum NS1 Force AXS. The initial miles immediately revealed the bike's racing pedigree: an exceptionally stiff frame and fork that eagerly translate pedal input into forward motion. Weighing in at 7.4kg, the NS1 is not the lightest but demonstrates remarkable alacrity, accelerating briskly from a standstill and maintaining momentum with ease. The bike's bottom bracket area exhibited superb rigidity during intense efforts, and the fork legs showed no discernible lateral flex even when leaning into turns out of the saddle, underscoring its efficiency.
The NS1’s geometry places the rider in a classic race position – long and low – yet it avoids the extreme discomfort often associated with such setups. With stack and reach figures closely mirroring popular race bikes like the Giant TCR, riders can adopt an aerodynamic posture for speed without enduring undue strain on their back or ribs over extended periods. This balance makes the NS1 suitable for serious riders who desire race-level performance without exclusively participating in competitions.
Steering is quick and precise, allowing for confident navigation through technical descents. The bike responds intuitively to body shifts and handlebar pressure, enabling riders to adjust their line with accuracy. Its sub-meter wheelbase contributes to an overall nimble feel, providing both stability and responsiveness when encountering road imperfections or needing to make quick directional changes. The powerful SRAM Force braking system complements this agility, offering robust stopping power without inducing fork flex or vibration, ensuring a composed ride even under aggressive deceleration.
However, the NS1’s primary area for improvement lies in its ride quality. The pursuit of extreme stiffness has, to some extent, compromised comfort. While carbon fiber construction allows for manipulation of frame behavior through composite grades and tube profiles, the NS1 leans towards a firm, almost harsh, ride compared to many contemporaries. On smooth surfaces, this is a non-issue. Yet, on the undulating and often poorly maintained roads prevalent in regions like the UK, every bump and ripple is keenly felt. Extended rides of three hours or more left the reviewer feeling battered, particularly in the hands, wrists, and other contact points. While larger 35mm tires could be fitted at lower pressures to mitigate this, it would potentially sacrifice road feedback and handling precision.
The frame and fork represent Ventum’s commitment to lightweight performance and aerodynamics. The latest NS1 model has shed over 200g from its predecessor, achieving a claimed weight of 852g for a M/L size. This reduction is attributed to a new carbon layup and the use of higher modulus carbon fiber. Structural improvements include a 7.7% increase in head tube stiffness and an 11.9% increase at the bottom bracket. The front end incorporates design elements from Ventum’s Tempus time-trial bike, featuring an extended leading edge for improved airflow and an hourglass-shaped head tube to reduce frontal area. The bike's aesthetic, in a pink, black, and chrome finish, is modern and clean, with fully integrated cables and hoses.
The NS1 is available in six sizes from XS to XL. The medium model tested features a 553mm top tube, 133mm head tube (73-degree angle), 373mm fork length, 541mm stack, 388mm reach, and a 73-degree seat tube angle. It boasts a 984mm wheelbase, 410mm chainstay, and 584mm front center measurement. Tire clearance extends to 35mm, and it includes two bottle cage mounts, with a three-bolt option on the seat tube for flexibility. The T47 threaded bottom bracket offers ease of maintenance and stiffness, and the frame is compatible with UDH (universal derailleur hangers).
Pricing for the Ventum NS1 Force AXS model is £5,999, placing it competitively within the market, especially considering its high-quality specifications. The build includes premium components such as FSA Powertouch bar tape, known for its plush feel. The SRAM Force AXS groupset is a highlight, offering excellent ergonomics with a smaller shifter design that enhances braking power, allowing for single-finger stopping from high speeds. The bike utilizes a 160mm front rotor and a 140mm rear, providing ample modulation and feel. SRAM’s intuitive gear-changing mechanism, with dedicated levers for upshifts and downshifts and simultaneous presses for chainring changes, proves highly effective. The gear ratios (48/35T chainset with a 10-36T 12-speed cassette) are well-suited for varied terrain and include a power meter as standard. The integrated carbon handlebar/stem combo, with a 90mm stem and 42cm wide handlebar, offers a comfortable and controlled cockpit. The Fizik Vento Argo R5 saddle provides adequate support, and the Zipp 404 S wheelset, weighing 1,536g, delivers responsive performance. These wheels feature a 50mm rim depth and a 23mm inner rim width, ideal for wider road tires. A potential limitation is the hookless rim design, which restricts tire choice to tubeless-only and caps tire pressures at 73psi. The review model came equipped with Continental GP5000 TR tires, highly regarded for their performance.
In conclusion, the Ventum NS1 Force AXS offers a compelling package for riders seeking a fast, agile, and aggressively styled race bike. Its handling is sharp, its power transfer is excellent, and its components are top-tier. However, its relatively stiff ride quality, particularly on imperfect road surfaces, prevents it from achieving a higher overall rating. While it delivers an enjoyable and high-performance experience, many competitors in its class now offer similar stiffness and speed without compromising on comfort, making the NS1 a good choice, but not necessarily the best, especially for riders in areas with challenging road conditions.