Light-weight Aero Performance

The Ares4 ES does it all – at a price point that avails the world of pure speed to more riders. With a 42mm Delta rim profile and paired-spoke technology, it perfectly balances weight savings with aerodynamics. Float up long-climbs, save watts on windy flats, master technical descents with confidence and end the day with a smile. 

The 20mm internal width rim and tubeless-ready technology offer improved ride quality and reliability. They're laced to our solid yet economical XR3.0 level hub for smooth rolling performance mile after mile. For the best performance in every situation, go all-in with the standard Ares4 Disc. 

This is a disc brake specific wheelset. 

All Rolf Prima orders are by hand in Eugene, Oregon. 

*We do our best to ship your wheel order ASAP, but because your wheel orders are custom built, please allow up to 2-4 weeks for shipment once your order is processed.  Contact for more information!


  • Weight: 1665g [750g/915g]
  • Rim: Carbon clincher
    • Rim Depth: 42mm  
    • Rim Width (max): 28.5mm, 19.5mm internal
    • Tubeless compatible [kit required]
  • Brake type: Disc brake, Center Lock
  • Spoke count: 24/24
  • Spoke type: Sapim CX Speed, bladed 
  • Hubset: XR3.0
    • Steel cartridge bearings
    • Front axle: 12mm [15mm,9mm- kit]
    • Rear axle: 142mm [135mm -kit]
    • Freehub:  Forged Aluminum
    • Freehub  compatibilityShimano HG11, SRAM XDR 11/12
  • Tire size and pressure recommendation: Please refer to chart in product images
  • Includes: rim strips, valve extender and Rolf Prima's Certainty