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Keep your money. Buy a lectron carb. The differance is huge. Better than any mod you can do. You will not have realy more hp i think. But you will have the power you should have !

I have an 150sx 2018. B class Sproket 13/46 Power valve unscrewed at max. 37.5 pilot 540 main Ride mainly in a sandy track and the bike ride awsome. If you didnt try the 13 46 gearing. Try it before commenting badly about it. With the stock gearing i was cornering in 3rd and the 4th gear miss just a...