The gear ratio is the same 4:56, just like my C30 mason's dump....When that speedometer hits 50, that's all she wrote.....Sure wish this was a k10 with a sortie....but theses days you get what you can, & I feel I was lucky to get this....The best thing about it is the originally, never tampered or molested......and the 250 is the icing on the cake !!