Both of these are fairly easy to attain, depending upon whether you are paying heed or not, when you operate dirt bikes. Following a few sentiments in the heat of the here and now, however, will land you safely without scares happening anywhere along the trail or in your mind.
Go with a four stroke dirt bike
If you have been debating moving up to a four stroke motor think about the environs and safety as a selling point. When a two stroke dirt bike careens up a jump it is prone to explosive bursts of power because of its fuel/oil mixing requirements. A 4 stroke engine is a fair bit bigger and needs an oil pump to get everything lubed so the power ratios experienced are quite a bit smoother. Finally this gives the ground a bit of a rest because the tires don't throw quite as much dirt and the air takes a breather due to the fact that the power spikes are more efficient when you ask for the power. From a safety point of view going with a four stroke makes the bike easier to handle as you manage the bike because your more sure that you'll get the power you ask for and not the power that may show up unexpectedly.
4 stroke on the trails
The power management aspects of a four stroke engine will help the environment when you are on the trails as well. If you have a fairly good idea of what power you are going to get when you ask for it you can back off and then reestablish it as trail conditions permit. If, for instance, you see a good sized puddle on the trail you could go flying through it at full throttle (which might be fun but environmentally irresponsible) or you could back off a bit and ride around the edges at a responsible speed to reestablish a strong position where the trail is a bit firmer.
How much pressure
Think about how much pressure you are using in your tires as you hit the trails. What sort of soil or substrate are you going to be riding on that particular day? Just because they call them dirt bikes doesn't necessarily mean that you're going to be riding on dirt all day every day. Now does it? If you are heading out to the sand dunes consider your tire pressure before during and after you ride that day. Reducing the pressure for that day may make the riding better for that day, but what about the nest day when you head for a firmer substrate? If you don't stay on top of where and when you are riding you will not only destroy your tires but spend more on gas and send more pollutants into the air.
Check out the gear
Sure you want to look dope on the bike but safety is a good thing to. There is little use in looking good when you ride if the only person that is going to enjoy how you look is the ER nurse. When you pad up consider the materials that you are wearing. Polymer products do the job for joints and head nicely but they are after all oil based products. Heck, just about everything is a polymer base these days, but it doesn't necessarily mean you have to always use it for safety protection. First, stick with the head gear that works, don't skimp here or anywhere for that matter. When to look around and think, however, is in the ballistic and extremity areas. Here, think about spun fibers and what they offer instead of going for the hard polymer choice. These products are flexible and can give the protection you need if the right choices are made. The environment will thank you with one karma point.
