2003 kx125 Athena cylinder/head Oem piston

Daniel_Vanderbasch
Just put an Athena cylinder and head on my 2003 kx125 and tried to use an oem piston. When I tighten the head up the piston is hitting the head. Any opinions or does anyone know if there is a different piston I need to use? Also does anyone know the size of o ring used for the interchangeable dome on the Athena head? Thank
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gristle568
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gristle568 5/7/2020 3:03am
5/7/2020 3:03am
the Athena kit uses a flat top piston and the stock cylinder/head is setup for a dome piston, You need to get the specific Athena piston for their kit.

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