The Bridgestone Battlecross X40 is Bridgestones hard terrain MX tyre. The front has a asymmetric block pattern like the X30 but Bridgestone have added extra block ribbing to increase knob durability and rigidity. The rear tread has Bridgestones castle block tread pattern were a inner softer rubber block is surrounded by a firmer compound rubber block. The block are closer when compared to the X30 and like the front have extra ribbing added to tie the knobs together. The smaller spacing help with trad life and traction when the knob sits on the surface. These are great for hard packed MX tracks and rocky bush riding.
