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Dirt Bike Brands - Other
first dirt bike NEED HELP!!!
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[QUOTE="Detonator, post: 950473, member: 44104"] I rode/raced a YZ 125 off road and in the woods, and there's nothing inherently wrong with them. Lots of guys woods race them around here, and the KTM 125 SX, too. However, if you leave it set up like a motocrosser, it'll break your other hand and your legs. You just have to make your bike more purpose-built. Since your hand is broken, you have time to get going on your project. Follow the bouncing ball... 1) How tall are you, and how much do you weigh? MX and trail/woods bikes have very different suspension setups. The good news is Yamaha makes good suspenders, and you'll be able to tweak it if you're under 180 lbs. If you're over 180, I'd agree that a new bike is in order. 2) Count the number of teeth on the front sprocket. Go buy another front sprocket with one tooth less. Should be less than $20. Your gearing will be spaced a little closer now, but 125 MX gearing is too gappy for technical trails. While both sprockets are new, I'd really recommend getting a good O-ring chain...it'll last years on that bike. 3) Check your tire pressure. 14 pounds each end is a good baseline. I've seen guys with 35 lbs in the front who complain when the front wheel washes out on dry corner. 4) Get a 9 oz Steahly flywheel weight ([url]www.steahlyoffroad.com[/url] or someone who sells them). This will improve traction, put power into forward motion rather than wheelspin, reduce the tendency to stall, and make technical sections easier to grunt over. 5) Get a set of Boyesen Power reeds to help with throttle response down low. The carbon fibre reeds tend to do the opposite. 6) Jetting is really important. Again, someone with experience can help you get your jetting clean. Woods bikes spend a lot more time in the first 1/3 of the throttle range than MX'ers do, so get your pilot jet/air screw settings down. 7) Forget changing the pipe. Stock pipes are fine, quieter than most aftermarket, and there aren't any good options for low-end pipes for a 125. 8. Some years of the YZ have the option of a powervalve spring change that can delay the opening of the PV, which means the surge of power comes on a bit later than stock. IMO, it's not necessary to fiddle with it. For around $35, Moose makes a torque ring kit that shifts the power characteristics down in the curve. It's just a spacer and gasket that goes on the reed valve side of the motor. I've heard mixed results on these, but for that money it's worth a try. Certainly better than throwing $200 at a loud pipe. Don't despair too much. I'd question your dealer's motivation in selling you that bike, but you might find you really enjoy your properly set up YZ. I couldn't keep my riding buddies off mine. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
first dirt bike NEED HELP!!!
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