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KTM MX & Off-Road Dirt Bikes
ktm400sx or 520sx???what to do what to do??
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[QUOTE="Bud-Man, post: 495335, member: 20830"] TTRguy.....I'm with you on that!! woodsy, If you're using the "bursty" or "snappy" feel of a motor to measure it's power then the 520 defenitly wouldn't be strong. While I've never riden an 520 EXC, I'm surprised it felt that slow. I've had a good bit of time on a freinds '97 XR400 and it wasn't even in the same ballpark as these fourstrokes. Another thing to consider is the jetting. The recent KTM fourstrokes benefit greatly from some jetting changes. A lot of people fail to realize this as the bikes don't run abnormally stock. Yet with some simple changes the bikes run much better. This applies to 400s and 520s of all types. I haven't read the bike comparison you mentioned but I've seen both dyno charts and other tests that put the fourstrokes ahead of any of the modern 2 strokes in terms of peak horsepower. The real difference though is in the spread of power and low rpm torque. In these areas the 450/520s smoke the 2 strokes. I'm not just quoting magazine article either as one of my closest riding freinds has an '02 CRF450 and another buddy has an '01 YZ426 (both stock motors). In terms of shear power output we all agree that my 520SX has the edge but it defenitely isn't the punchy-est power delivery. If you like the feel of a two stoke then the 520 motor is defenitely not a good choice. [/QUOTE]
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Dirt Bike Discussions By Brand
KTM MX & Off-Road Dirt Bikes
ktm400sx or 520sx???what to do what to do??
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