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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.


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Old 11-22-2009, 09:37 PM
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Default O-rings.

OK, I ordered new o-rings from GoFasters for my head (EC300).

The outer ring fits perfectly but there isn't a ghost's chance for the inner one. It is too small. The part number they said they sent me seems to be correct (ME30916065). What's up?


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Old 11-22-2009, 11:42 PM
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I had the same problem when I did my squish mod. I just used the old one with no problems.
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Old 11-22-2009, 11:44 PM
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Little bit of heat (hair dryer) and some grease? I think I remember KTM guys talking about this, that they have to give them a good stretch to fit.
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Old 11-23-2009, 06:42 AM
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You shouldn't have to go crazy to get it to fit. It should stay in the groove with a light stretch and a coating of grease. My guess is you got the o-ring for a 250. I've seen this before, where a dealer had a bag of o-rings for a 200 with the 250 part #.
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Old 11-23-2009, 07:30 AM
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Quote:
Originally Posted by rxbandit View Post
Little bit of heat (hair dryer) and some grease? I think I remember KTM guys talking about this, that they have to give them a good stretch to fit.
Maybe with a propane torch. It isn't going to happen with heat.
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Old 11-23-2009, 09:24 AM
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A human mistake...the wrong "o"ring was stuffed in the right bag. Same thing happended to me on my last topend. A simple phone call and the problem was cleared up!

Not to highjack your post, Speaking of Go-Fasters, I ordered some really off the wall parts last week, brake pedal bushing, silent block for the chain guide, a rubber plug for the bottom of my swingarm, lower shock bearing, "o"rings, and washers and a few other items.......ALL IN STOCK...received all parts on Friday!!!!! Enough Said!!
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Old 11-23-2009, 03:24 PM
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I had to stretch mine to get it to fit
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Old 11-23-2009, 06:14 PM
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Quote:
Originally Posted by Rick View Post
A human mistake...the wrong "o"ring was stuffed in the right bag. Same thing happended to me on my last topend. A simple phone call and the problem was cleared up!
Yep. Mark is sending me the right one.
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