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Dirt Bike Discussions By Brand
KTM MX & Off-Road Dirt Bikes
Broken Piston on 250 EXC
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[QUOTE="colorado-high, post: 458507, member: 19078"] I had the same problem with my bike and also know of two others with the same thing.The problem is that the end of the ring gets caught on the edge of the transfer port and the ring end gets stuck in the port and bends over and breaks the top of the piston.This is a problem that KTM knows about and will warrenty it.My bike was 7 months old with close to 4500 miles on it,the other bikes were 10 months and 9 months and all the repairs were covered under warrenty. The fix was to move the locating pin on the piston so the ring gap would not come in contact with the port.If your dealer will not cover it under warrenty you can ship the motor to my dealer and he will fix it under warrenty. [/QUOTE]
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Dirt Bike Discussions By Brand
KTM MX & Off-Road Dirt Bikes
Broken Piston on 250 EXC
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