MAIN FEATURES Ultralight and durable for everyday performance ISM 4D rim weighs only 400gPatented lightweight aero spokes and 22mm high, 19mm wide rim help reduce inertia and increase handlingThanks to the strength of the upper rim bridge, no need for rim tape, which saves another 60 g Lateral stiffness and vertical flexibility for more dynamic riding Fore technology ensures the strength of the rim's upper bridge, which increases its rigidityNew Infinity hub platform: rigid axle, durable bearings and new hub design for guaranteed wheel stabilityID360 freewheel body for a better power transfer The optimized UST Road system allows for more speed, more comfort and better handling, all with an easy-to-use tubeless system Who says no inner tube means less friction, more efficiency and grip, and better puncture protectionThe new profile of the upper bridge of the rim makes it easier to mount and change tiresWith drilling technology Fore, no more rim tape needed Ksyrium has always represented the best in aluminum wheel technology. In the footsteps of the venerable Ksyrium Elite and Ksyrium Pro, the brand new Ksyrium SL Disc has no reason to blush. Looking for a wheelset for weekend racing and training distance? Wherever the road takes you, it's the safest choice.This new wheel is extremely light (120 g less than the old Ksyrium Elite UST Disc) and still just as durable thanks to our patented ISM 4D process. This machining process makes it possible to remove all the excess material between each spoke hole, while maintaining sufficient wall thickness where spoke tension and stresses are greatest. These rims are made in France, in our aluminum rim factory.Butted spokes help further reduce weight and make for an even more responsive wheel. Their patented elliptical shape also saves energy to increase efficiency.Fore technology reinforces rigidity. The upper bridge of the rim is not drilled; it therefore remains resistant and rigid, and does not require the installation of a rim tape (another 30 g less per wheel). With the new profile of the upper bridge of the rim, mounting and demounting a tire has never been so easy; our UST Tubeless technology reduces rolling resistance and increases grip while limiting the risk of punctures. Our new Infinity hub platform optimizes stiffness and power transfer, thanks to carefully tuned spoke tension. The Instant Drive 360 freewheel body, combined with the automatic adjustment of the QRM Auto bearings, guarantees quick engagement, good rigidity and increased durability. Designed specifically for disc brakes, these wheels are compatible with a 12 x 100 front axle and a 12 x 142 rear axle, and can be converted to quick release using the adapters provided. For Center Lock brake rotors only. It can be fitted with Shimano or SRAM XD-Road cassettes, and is convertible to Campagnolo using an optional freewheel body.
