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


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  #1  
Old 06-07-2011, 12:19 AM
Ry187 Ry187 is offline
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Default New Piston

Hey guys,

Great forum!

Had my 2000 YZ250 for 7 years...Chose the 11 300 sixdays!

Awesomeness! (make sure the dealer or you bend codder pin on quick release pin on rear caliper.....I learnt the hard way)......still awesome ha!

Took stock pipe off, put gnarly on after 12 hoursRT... looked at piston first.....ahhhhhhhhh!
"Whats all that black shit?"

Can I trust the dealer when they tell me its normal....a breakin compound. ????

Was hoping theyd say that! Is it correct?

Bike runs and sounds great! Gonna do jd kit asap... any pointers?

Thanx n glad to c so many gg riders! Im...BC CANADA!


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Old 06-07-2011, 12:51 AM
Sixdays Sixdays is offline
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The black stuff is a teflon coating on the skirts of the piston.

As for the clip on the brake pin I use a small zip tie on the open end.
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Old 06-07-2011, 04:10 AM
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bchatt bchatt is offline
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Yes, it's correct. Wouldn't exactly call it a breakin compound though, it lasts alot longer than that. I replaced my 1st piston at about 120 hrs and 70 or 80 % of that coating was still there.
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Old 06-07-2011, 04:37 AM
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noobi noobi is offline
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Its not really a breaking in compund as such, just a poly-tetra-fluoro-ethylene (teflon) based coating to reduce friction between the cylinder and piston skirt.
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