Any time you are replacing a broken freehub or changing to a new brand, you need to pick up a new freewheel body. If you run the Mavic Instant Drive 360 Hubs, this Mavic ID360 body will have you back on the road in no time. The N3W version converts your rear tire to properly fit a Campagnolo N3W cassette. Your bike will feel as engaged and responsive as ever with the switch to a Mavic freehub. The freehub features a radial seal which is great at keeping water and various debris out of your system. With this freehub body on your favorite bike, you will feel comfortable riding in inclement weather and can feel confident that your new hub will last.