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Jeff Policky
Jeff Policky, Motorcycle Mechanic
Category: Motorcycle
Satisfied Customers: 2425
Experience:  Yamaha Gold, Suzuki Gold, Honda Bronze, Polaris Bronze, BRP
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What piston rings go to an engine with a4.2dia.bore?

Customer Question

What piston rings go to an engine with a4.2dia.bore?
Submitted: 7 months ago.
Category: Motorcycle
Expert:  kwiggins29059 replied 7 months ago.
Hi, what model or CC engine is this?
Customer: replied 7 months ago.
I believe someone has installed a big bore kit on this kymco super S. Recently had gasket failure, and in reassembly i want to install new rings. Please advise.
(thats 9S)
Expert:  kwiggins29059 replied 7 months ago.
Thanks, ***** ***** an off brand big bore kit. I'm not finding anything in 42mm for these rings, smallest I see is 47mm I'll open this back up to other experts for you.