Aero for All
The R-50s achieve superior aerodynamics while weighing 100 grams less than our already-light R-64s. They hit the performance sweet spot between aerodynamic efficiency and lightweight responsiveness. The R-50s will reliably deliver performance in a variety of conditions, and they’re also just plain reliable. Strong spokes, DT Swiss hub internals, and hand-built precision mean you can go hard on any ride or in any race, season after season. Rise to Speed anywhere. The R-50’s brilliance is its breadth of ability. With supernaturally balanced performance, you’ll find your fast on any road.
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. HollowGram SL wheels rise to even higher speeds. DT Swiss Aerolite spokes – shaped for lower drag without losing strength – are paired with custom HollowGram hub shells. Ultra-reliable DT Swiss 240 EXP internals at the rear bring a 36-tooth freehub ratchet for instantaneous pedaling engagement while minimizing mechanical drag. In HollowGram speak, SL means weight is lowered, responsiveness is increased, and aerodynamic efficiency is maximized
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.
Highlights
Developed with D.R.A.F.T. our 50mm deep, 21mm internal/32mm external width carbon rims are aerodynamic, lightweight, tubeless compatible
Grand Forza double-butted spokes keep it light while staying strong and reliable
Built with Cannondale's custom straight pull HollowGram hub shell and ultra-reliable DT Swiss 350 rear internals for performance and ease of service
At 1620g a pair the R-S 50 is a blend of lightweight and aerodynamic performance
A limited lifetime warranty to give you peace of mind
Specifications
Rear Hub: HollowGram Road, 12x142mm, centerlock, DT Swiss 350 internals, 24h straight pull
Rim Depth: 50mm
Rim Outer Width: 32mm
Rim Inner Width: 21mm
Rim Type: Carbon clincher, hooked, tubeless ready
Nipple Type: Sapim Up side down, brass
Eff. Rim Diameter: 538mm
Max Spoke Tension: 100-130 kg
Max Tyre Pressure: 120psi
Brake Type: Disc
Max Rider Weight: 100kg
Spoke Count: 24h
Spoke Length: 278mm / 275mm
Spoke Type: Formula Grand Forza - 2:1, 3-cross DS / 1-cross NDS
Wheel Size: 700c
Weight: 800g
