R 45 SRAM XDR Rear Wheel

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        Aero for All

        Bring HollowGram performance and serious value to any road bike. Rise to Speed, for less, with our ready-for-anything R-45 wheelset.

        Highlights

        • Developed with D.R.A.F.T. our 45mm deep, 21mm internal/32mm external width rims are aerodynamic and lightweight
        • Grand Forza double-butted spokes keep it light while staying strong and reliable
        • Ready for tubeless setup right out-of-the-box
        • At 1740g a pair the R 45 is performance-packed and ready for any road ride
        • A limited lifetime warranty to give you peace of mind
        • SRAM XDR freehub body compatible

        Aero for All

        Aerodynamic Overachiever
        The R-45 rim profile packs the same DRAFT-optimized aerodynamic advantage of all other HollowGram road wheels. Its precision-crafted shape means higher speeds with less effort, making you faster everywhere.
        Upgrade It All

        You’ll find advantages in every area of performance with the R-45 wheels: high-speed stability, sharp handling, low weight, and tough construction are all upgrades to any bike and any ride.

        Keeping Up

        High-performance tire technology has evolved, and HollowGram is here for it. Tubeless compatibility, 21mm internal widths, and hooked sidewalls are part of every package. It’s all optimized around modern road tires, for that ideal blend of ride quality, aerodynamic efficiency, and low weight.

        The D.R.A.F.T. Approach

        It’s one thing to cut through the wind. It’s another thing to master it. D.R.A.F.T. stands for Drag-Reducing Aerodynamic Flow Technology, an approach pioneered over the course of thousands of testing hours by our in-house aerodynamicists and applied to all HollowGram road wheels. We leverage data and testing focused on real-world riding conditions – like headwinds, crosswinds, and variable winds that shift as you ride – not just those that are simulated in a wind tunnel. The result is rim properties that work with the wind, not against it, and wheels that help you go faster, not just look faster. D.R.A.F.T. creates wheels that help you Rise to Speed, no matter the day.

        Learn more

        Specs

        Details

        • Platform
          R 45
        • Model Name
          R 45 SRAM XDR Rear Wheel
        • Model Code
          HP8232U

        Wheels

        • Rear Hub
          HollowGram Road, 12x142mm, Centerlock, Formula internals, 28h, straight pull
        • Rim Depth
          45mm
        • Rim Outer Width
          32mm
        • Rim Inner Width
          21mm
        • Rim Type
          Carbon clincher, hooked, tubeless ready
        • Nipple Type
          Sapim Up side down, brass
        • Effective Rim Diameter
          549mm
        • Maximum Spoke Tension
          100-130 kgf
        • Max Tire Pressure
          See Owner's Manual
        • Brake Type
          Disc
        • Rider Weight Limit
          100kg/220lbs
        • Spoke Count
          28h
        • Spoke Length (NDS-DS)
          288mm / 287mm
        • Spoke Type
          Formula Grand Forza - 3-cross
        • Wheel Size
          700c

        Extra

        • Extra 1
          Tubeless tape

        Weight: 1740g (pair) - Bike and frame weights may vary in final production.
        Please note that, based on component availability and other factors, specifications are subject to change without notice.

        Make it a set

        Rise to Speed. Discover more HollowGram.
        See the Collection