Downhill bike components are among the strongest and the most durable on the market. As cross country bikes boast technical prowess and lightweight, downhill bike components would boast the converse. Downhill bike components are durable, strong and much heavier than their counterparts in the cross country realm. Be prepared to pay a healthy bill for these components, as the pro level components can push these bikes, when sold as a complete bike, into the economic stratosphere. The above downhill bike manufactured by Kona, one of the best companies in the business, runs a cool $4700.00. So you have to choose, do you want a nice used commuter car or a sweet downhill ride capable of launching over giant boulders in a single bound.