Why a Sprung Hub Disk is Not the Best for Racing

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10,000 RPM recommends solid hub disks for racing use. Sprung hub disks may be fine for passenger cars, but have major disadvantages for race applications. First and most obvious is that they are much heavier than a solid hub disk. Our solid hub disks are available with in both steel and aluminum versions with weights as low as 1 lb for a 10.5" disk. A typical "high performance" 10.5" disk weighs 3-4 times what our bonded KEVLAR solid hub racing disk does. 10,000 RPM's #1 Lite Racing clutches and components will make you more competitive.