The Black Inc. (Factors component brand) Forty-Five Wheelset is the perfect balance of aerodynamics, lightness, strength and stiffness. The wheel's performance in the wind is driven by the rim's proprietary profile. The Forty-Five is disc-only, tubeless-ready and optimized for 25-28mm tyres, with an internal rim width of 21mm. The new Black Inc. hubs run on custom-built Ceramic Speed bearings and feature an aggressively machined, lightweight freehub. The stiffness and weight of these wheels mean they are ready to take on the rolling terrain of Vancouver island or propel you to victory in your local Crit!