Walmart has the Genesis 24″ Mauler Boy’s Mountain Bike for only $88 Shipped! (Reg. $200) The Genesis 24″ Mauler mountain bike is a no-nonsense hard-tail mountain bike with all of the features you need for off-road, bike paths and around town. This bike has a custom over-sized aluminum frame with Vitesse wheels and a front suspension fork that handles bumpy terrain with ease. The 1×8 drive train will get you up and down all of the hills with the Microshift 26 rear derailleur.