Selling my current 310 top end kit to fund my next project.
73.5mm '86 style OEM cylinder. Told it had a dune port on it when I bought it.
73.45mm piston, rings, bearing, pin and head gasket.
DNS 30cc.
I ran this for 3 races last season and 4 day rides. Still can see the cross hatch from when I had it bored. Never gave me any issues. This is how it looked when I pulled it off. Didn't try and clean it up to hide anything. Will clean up prior to shipping however.
Needing to get a piston, dome and bore job for an ESR 310PV cylinder I picked up. That's why I'm asking $300. Make an offer. Has to go before I can get new parts the wife says.



