Essor USA Tri-Spoke Carbon Clincher Track Wheel Set, Front/Rear The ultra-aerodynamic Essor Tri-Spoke Wheel Features a 66mm deep rim with a 23mm wide outside diameter No rim tape need for extra weight savings; Sealed cartage bearings; Essor USA full 66mm rim without the added mass of a bonded faring Weight: Front Wheel: 970g, Rear Wheel: 1130g White decals are default Hub spacing: The front and rear spacing on our bicycles is 110mm and 120mm, respectively