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**JerryHawk250** · 04-05-2023, 04:58 PM

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.

04-05-2023, 04:58 PM	#2
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,713	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. __________________ 2024 Linhai 300 ATV 4x4 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S (Sold) 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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