The biggest reason the Husaberg is so much better right from the first push of the button is the fact that it is fuel injected. Immediately the Berg fires up and settles into a smooth idle. No choke, no sputter or stutter, just clean and consistent idle, ready to ride. So you don't even have to think about playing with jetting or how to get around the ridiculously lean jetting that a carbureted bike must come with to meet stringent emissions standards. Carbs have a hard time being as efficient running lean compared to FI systems, and this shows every time you twist the throttle on the Husaberg because it never misses a beat.
Speaking of the beat of the Berg, it rumbles through a 565cc electric-start-only 70-degree inclined four-stroke single. It uses a single overhead cam and runs 12.2:1 compression, very similar to the components atop the KTM 530, just slanted and bigger. The angle allows for a very straight shot at the short intake tract, especially considering one of the Husaberg trademarks has been to have the airbox in the position of a typical bike's fuel tank, up high, in front and looking right down at the top of the intake valves when you open the butterfly valve in the 42mm throttle body. What this unique engine configuration does is raise and centralize the center of gravity of the bike by placing the heavier spinning stuff more near the center of the bike. It feels heavier when the bike is sitting still but feels lighter and more maneuverable when riding. Take our word for it, because unless you get a test ride you won't believe how well it works.
That last line, the part about not believing how well the Husaberg works, carries on with every hour you spend on the bike. You just can't get over the fact that this is a 100 percent street-legal ride. On the street the performance is far superior to any "converted" bike and not too rough as to wreck you in less than 20 miles on pavement, like a lot of pseudo-street-legal bikes do. Sure, it vibrates a little through the bar, but not much. It isn't fat, doesn't feel heavy, runs smoothly, has minimal odds and ends hanging off of it and takes very little set up to switch over and be ready for the toughest of trail rides. And since we are Dirt Rider, that was just what we did with it. We rode it all through Utah, Nevada and even around California on everything from fast and long dirty roads to our tightest and nastiest single-track, and it doesn't take much to get it prepped to do this.
The first adjustment we made was to the gearing, from 14/42 to 13/50. Next we detached the funny air-injection device hanging aside the cylinder head and plugged the hole with the plug included in the bike's tool kit (the hose just comes off with it). To keep the license plate out of the rear wheel in the whoops we heated up the carrier and bent it up and away (back) from getting grabbed by the rear tire when bottoming. Siliconing the carrier to the fender gave us a little more confidence it would hold out for the distance, and ours is still hanging strong a month of thrashing later.
With the gearing change, first is plenty low to crawl. Power is never an issue. The speed which the Berg likes to crawl in first with the clutch fully engaged becomes your deciding factor in choosing what final drive ratio you might like. Our regeared bike is very comfortable cruising at 65 mph without revving too much and easily cranks up to 85 without hesitation in sixth. With the bike turning tractor-like rpm and not stalling, here is where the fuel injection can really be appreciated. If the throttle is cracked at all, the bike will not stall and it goes right along with every bit you turn it in a very controllable and predictable manner. Nice and easy if you turn it slow, and like a crazed ape if you screw it on. Our bike never hiccupped or acted funny in everything from freezing temperatures and all the way to 8,000 feet in elevation. There is hardly a full-race 450cc MX bike that puts out the sheer amount of power this 570 does and no off-road or trailbike that does it this smoothly. Roll this thing on where there is traction and it will put your stomach a lot closer to your throat, or at least its contents will shift in that direction.
