For those seeking high speeds on gravel tracks, the C-2542 rim has all you need.
Technical Specifications
Material: 100% Carbon Fibre
Height: 42mm
Internal width: 25mm
Tyre: Tubeless ready
ETRTO size: 622x25TSS
Braking: Disc
Profile: Symmetrical and hookless
Spoke bed diameter: 559mm
Drilling: Traditional without eyelet
Recommended tyre width: 30 to 64mm
Weight: 449g
Adaptive Layup: Strong where it matters, light everywhere else
Carbon is lighter than alloy, but weight always add up
 Using
 the right amount of fibres where the rim is less stressed to reduce rim
 weight with no compromise on reliability, this gives wheels that are 
livelier and more enjoyable while climbing.
Up to 70g saved per rim.
UST tubeless technology
Improves traction, control and comfort while reducing inertia and flats

Sized up for speed on gravel tracks
25mm inner rim with, hookless profile for a wider tyre, more grip, more traction, more comfort.
42mm rim depth => faster aerodynamics.