If you are not up to it then no doubt that the performance of this four wheeled bike would go down. Four wheels are what people picture an ATV with. In older days there were ATVís which had three wheels as well. One thing was same then and now. These are vehicles designed to transport one person and you would sit on it like a bike. There are few models of an all terrain vehicle which allow seating for two people. While preferring an ATV over a bike you need to know that it is not safer than a bike. In 2005 alone the estimates of injured people were 136,700 related to ATV accidental treatment.
Despite these factors people continue to purchase these vehicles. If that is the case then you better keep your ATV well maintain for proper response. You must not always go for second hand ATV parts. These would just ruin the vehicle. Shocks might be expensive but this is something which must be bought first hand. If the engine on the other hand does not work then you can buy a second hand one. Second hand ATV parts must only be bought if the part is extra ordinarily expensive and requires shipment from different area. For cheaper rates it would be best that you go online.