The 1590 2Y 1820kv is geared 54/18 and is a ice cold running ROCKET !
If the track or if you bash and the surface is really rough and choppy/large jumps the Losi shocks really shine. If it's a pretty smooth track or you bash on concrete you'll find it hard to notice a difference.
PE 1509 2Y
Almost a PE, w/1509 2Y