Wide butts or better known as "Super Boost", the former downhill hub dimensions 12x150 and 12x157 are also finding their way onto trail bikes. Industry Nine is now launching Super Boost system wheelsets with 24-hole rims. They are compatible with all frames that have a 12x150 or 12x157 Super Boost rear axle. The wheel can also be configured in any number of different hub widths and spoke and hub colors.