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Old 04-05-2023, 04:58 PM   #2
JerryHawk250   JerryHawk250 is offline
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You may want to get the bike first before ordering sprockets to see if you actually need to change the gear ratio. The bike does have a 6 speed transmission and my be properly geared already. EFI is a different animal compared to a carb. I would leave the stock airbox as is. The ECU needs to monitor the air intake temperature sensor which is normally located in the air box to adjust fuel mixture. Once you have the bike you will know what sprockets are installed and can go from there if needed. You also need to verify if it takes a 428 or 520 pitch chain and sprocket.
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