With the specialized riprock coaster 12 riding gets boiled down to its simplest elementmdashfun designed with tons of cool features that make it easy for your little ones to use like a coaster brake for simple stopping wide 12x23 tyres that increase stability and confidence and tough components which will stand up to years of abuse it39s the perfect bike for your little ripper to start getting out on the trail with specialized riprock coaster 12 2017 features the pr