Winspace has launched the M6, a new aero road frameset that the company says delivers up to 8.9 watts of aerodynamic drag reduction at 48km/h compared to the outgoing C5 Aero.
The figure comes from complete-bike testing with no rider, validated at the Fuji Aero Performance Centre wind tunnel in Japan, the brand states.
The frameset is priced at £1,450 / €1,499 / $1,499 USD, with shipping and tax included. At that price, the M6 undercuts the Canyon Aeroad CF SLX and Giant Propel Advanced Pro – both direct-to-consumer or near-direct brands themselves – by roughly a quarter, before you even reach the traditional big names.
It comes with the full internal cabling and wind tunnel validation we've come to expect from major brands, along with 32mm tyre clearance. Winspace lists the frame weight at approximately 900g and fork at 450g for a size medium, unpainted. Six sizes are available.
Winspace claims the frame is constructed from Toray M60 ultra-high modulus carbon, a material grade used in aerospace applications for its stiffness-to-weight ratio – though in reality it's likely that only a portion of the frame's carbon will use that grade. Lower modulus carbon fibres often suit certain frame areas better in both manufacturing and ride quality terms.
According to Winspace's tests, the aerodynamic gains over the C5 Aero come from specific tube-shape changes: fork blade depth increased from 58.23mm to 68.28mm, a jump of 17.26%, while the head tube profile was deepened from 83.96mm to 90.16mm. Winspace said these changes, combined with optimised frontal airflow transition zones, were developed through multi-stage CFD simulation before wind-tunnel validation.
Manufacturing and inspection
Winspace's quality-assurance language is a distinctive element of the launch. The company states that every fork and handlebar undergoes 100% medical-grade X-ray inspection before shipment, with defined maximum defect thresholds. Frames are X-rayed during R&D, then random-sampled during production runs.
Internal void tolerance is capped at 0.10mm, and Winspace says any component exceeding that threshold is rejected and destroyed. The company also says the M6 undergoes ISO-certified structural testing, including 2-ton load testing on the frame and fork.
The Xiamen-based company manufactures in-house, a claim that few European brands can level, marketing its quality control processes alongside aerodynamic claims.
The M6 will be raced by Team Roojai and other sponsored Winspace squads in international competition. Based on the numbers alone, the M6's geometry as leaning toward stability and all-day usability rather than an extreme race-only position, with a higher stack and longer wheelbase than Winspace's T1600 platform.
The frameset is available in eight colourways, ranging from Frost White to Chameleon White, and can be ordered through Winspace's global sales channels. Real-world performance beyond wind-tunnel conditions remains to be tested, but the combination of a sub-£1,500 frameset price, modern integration, and detailed QC claims gives the M6 a specific market position.
Complete builds start at $3,299 for the M6 105 Mechanic, rising to $3,699 with Shimano 105 Di2 electronic shifting and $4,399 for the Ultegra Di2 build. All three ship with Winspace's Unaas Hard D50 carbon wheelset – a 50mm-deep, T700 carbon rim laced to steel spokes, weighing approximately 1,600g – and the company's own Zero SL or HYPER integrated cockpit.
Six colourways and sizes XS through XXL are available across all builds. Buyers can also configure handlebar width, stem length, and crank length at checkout.
