Added reply in a thread 89 KDX200 Needle Jet 5/16/2017 1:42 AM

try R1173K / 2AFKP

Started new thread New 2 stroke design spreadsheets 5/14/2017 5:49 PM

engineering spreadsheets that anyone can use for : expansion chamber design squish velocity calculation boost bottle design crank balance calculation http://www.dragonfly75.com/moto/calculators.html

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