The mavic ksyrium pro carbon sl disc wheel is very durable and versatile and features a wide rim disc brake specific hub 24 spokes and a carbon rim design that is well catered for heavier road conditions in both wet and dry weather they are the perfect choice if wanting a wheelset that caters for fast riding with the power of disc brakes wheelset technology the ksyrium pro carbon sl disc wheels offers exceptional performance and durability which is due to the advanced technology used