The perfect upgrade to offer a new life to your rim brake mountain bike Lightweight wheel system to enhance your rim brake mountain bike Wheelset weighs only 1700g System engineered for overall performance Hub efficiency with FTS-X freehub and smooth QRM bearings Strong and durable for long-lasting performance Reinforced rims feature H2 spoke drilling for increased lifespan Proven reliability of FTS-X freehub No maintenance QRM bearings Give your bike the Mavic look and feel Large and visible Mavic graphics Straight pull bladed spokes a Mavic signature Handbuilt in Europe Weight Pair: 1700g Rear: 920g Front: 780g 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