Ever wondered what the world's best alloy road wheel might look like? Lightweight but durable laterally stiff but vertically compliant confident braking and easy tubeless compatibility - it's all here in the all-new Ksyrium SL Disc Ksyrium has always represented the best of aluminium wheel technology. Following in the footsteps of the venerable Ksyrium Elite and Ksyrium Pro the Ksyrium SL takes it to the next level. It's the perfect all rounder for those seeking a wheel that delivers reliable everyday performance on the road. Features Superlight and durable for everyday performance ISM4D rim weighs only 400g Patented lightweight aero spokes and 22mm deep/19mm wide rims keep inertia low and control high Solid upper rim bridge eliminates the need for rim tape saving 60g Laterally stiff vertically compliant for a more dynamic ride Fore technology keeps the rim upper bridge solid to make the rim stiffer Infinity hub platform: stiff axle durable bearings and new hub design guarantees wheel stability ID360 freewheel technology for improved power transfer Improved UST Road delivering speed comfort and control No tubes means less friction improved efficiency and grip with reduced risk of punctures Rim bed shape makes it easier to mount and change tyres Fore Carbon drilling technology means no rim tape is required Weight Pair: 1575g Rear: 852g Front: 723g Understanding the different Mavic freehub body acronyms: HG or M11 – Shimano HG Road 11/12x other speeds with spacer MS - Shimano Microspline XD - SRAM XD XD-R - SRAM XD-R ED11 - Campagnolo 9/12x N3W - Campagnolo 13x