The Zipp 303 XPLR S wheel is a great, affordable upgrade for gravel riders looking for speed. This wheel borrows key innovations from our premium wheel to offer opportunistic riders a robust, value-packed solution. Its ultra-wide rim pairs perfectly with approved gravel tires to promote maximum speed on gravel.Specifications:- Rear Spoke: CX-Sprint spokes, aluminum nipples with Sapim Secure-Loc- Front Spoke: CX-Sprint spokes, aluminum nipples with Sapim Secure-Loc- Rim Color: UD Fiber, Standard Adhesive Decals- Crossing Rays: Crossed by 2- Rear Axle Dimension: 12x142 mm- Front Axle Dimension: 12x100 mm- Discipline: Road, Gravel- Product family: Wheels- Tidy: 303- Hub Range: 76D / 176D- Rim Height: 54 mm- Rim hook type: Carbon - Hookless- Outer Rim Width: 40 mm- Inner Rim Width: 32 mm- Rental: Peer- Axle material: Aluminum front & rear- Hub material: Aluminum- Freewheel mechanism: 3-pawl leaf spring- Disk Mounting: Centerlock- Number of Rear Spokes: 24- Number of Front Spokes: 24- Maximum recommended total weight: 286lbs/130kg- Maximum pressure: 50psi/3.45bar- Rim Profile: Symmetrical- Hub Bearing: Cartridge - Stainless steel- Size Diameter: 700c- Surface texture: Smooth- Rear Axle Type: Through axle- Front Axle Type: Crossing Axis- Brake Type: Disc (CenterLock)- Tire Type: Tubeless- Freewheel Type: SRAM XDR