ENVE SES 4. 5 Innerdrive Wheel Fast is The Only Speed When speed across most any terrain is priority number one, look no further than the SES 4. 5. Originally designed for the cobbles and crosswinds of Paris-Roubaix to provide an aero benefit with high-volume tires, the SES 4. 5 was the first of its kind and is now re-designed to deliver more speed in a lighter package. It features a 25mm inner rim width and is aero-optimized for 27mm to 28mm tires. The SES 4. 5 has been optimized for road tubeless performance and features a hookless bead design that allows for the precise rim dimensions required to achieve the best tubeless performance. To further improve tubeless tire and rim reliability, this aerodynamic carbon fiber wheelset features ENVE's patent pending Wide Hookless Bead, a design element at the leading edge of the rim that provides a more forgiving surface, that when impacted, will reduce the likelihood of pinch-flatting a tubeless tire. The new ENVE Innerdrive Premium straight pull hub delivers 60 grams of weight savings over ENVE's previous generation hub offering. The rear hub also has interchangeable ratchets that allow riders to tune their rides to their personal preferences and needs. Features Lightweight carbon rim with an aerodynamic advantage25mm inner rim width that is optimized for tubeless road tires Minimum labeled tire size: 27mm Innerdrive Premium Hub with consistent spoke lengths SPECIFICATIONSWheel Size700c Material Carbon Rims Outer Width32mm Inner Width25mm Rim Height50mm Front, 56mm Rear Spoke Drilling24HValve Type Presta Tubeless Yes Tire Type Clincher Brake Compatibility Disc (Centerlock, Lockrings Not Included)Front Axle12x100mm Rear Axle12x142mm Intended Use Road, All-Road, Gravel Approximate Weight1432g Per Wheelset | Enve | Ses 4. 5 Innerdrive Wheel Front, 12X100