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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
pw50 dirt bike rider - no power!
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[QUOTE="Jasle, post: 1230492, member: 26675"] Reading your post though it sounds like you did not take the restrictor out at the head/pipe. it is part of the crush washer. There is no restrictor to speak of in the muffler other than the spark arrestor which you should leave in if your riding in grass and trails. you can get a ring/pinion from the yamaha qt50. it is 5.7:1 instead of 4.9:1 quite an improvment in bottom end takeoff ability. yes people race the pw but they suck. racers will rejet instantly to a 67.5 main jet. this helps minimally. when on the race track with beginner riders the bikes still need help up the hills. you need a kid that can tap them out. make no mistake, just because people race them does not mean this is a race bike. maxed out this bike has half the power of a lawnmower. main problem is the clutch engages so early. this is to tame it down. buy some aftermarket clutch springs. they increase stall speed and make the bike take off harder. a little scarier for newbies though. YT60 piston and overbore help a lot if your not going to race it. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
pw50 dirt bike rider - no power!
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