Scrubtherubber Posted June 28, 2013 Report Share Posted June 28, 2013 So took the head off to install a new head from fast first of I'm happy these pistons are so clean looking but are they stock bore ? Quote Link to comment Share on other sites More sharing options...
toytech Posted June 29, 2013 Report Share Posted June 29, 2013 pics ? Quote Link to comment Share on other sites More sharing options...
Scrubtherubber Posted June 29, 2013 Author Report Share Posted June 29, 2013 sorry i tried to upload from my phone and it didnt work Quote Link to comment Share on other sites More sharing options...
Young Guns Racing Posted July 1, 2013 Report Share Posted July 1, 2013 Hmm I dont think so. Stock pistons usually have more markings on them (if i am correct). All the Pro-X pistons do and those are OEM manufactured for yamaha. Anyhow go to harbor freight or some other cheap tool store and buy a set of calipers. You'll spend like $20 and you'll have them to come in handy! Quote Link to comment Share on other sites More sharing options...
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