These spacers are the cheapest way to go for widing your rear end. It saves you over 300$ if you wanted to get a wider rear axle. These have cut my turn times in half! I have a Raptor 700 and they are known to flip cause the spacing in the rear isnt proportioned right for the bike but with these babies its a quick and easy fix! Easiest thing to install too! These are a MUST HAVE if you plan on doing some serious racing!!!