any one know what is the EOM grea tooth (front and rear) of 2001 F4i/
thanks much

should be 16/45

I thought it was 16/46...

16/46 or 16/45 both are stock
I would go with 46 tho

Mine is 16/46 but when I hit 60-70 mph, it feels like 50 somethings. The bike is used to be a stunt bike so how do I check if there's a speedo healer or any parts that could affect my speedometer? Thanks for the replies.

they come from the factory a bit off already.
count your sprocket teeth and see how many you get, both front and back.

check for other lines coming off the battery. there should only be one, unless you have another one for a PC3 or something else.

Another question, I have about 9k on my bike, 16/46 good cont. If I put in a brand new rear 42 will it be OK with the old chain or I have to replave the whole set up?

ORIGINAL: MOF4

Another question, I have about 9k on my bike, 16/46 good cont. If I put in a brand new rear 42 will it be OK with the old chain or I have to replave the whole set up?


Good idea to replace the chain and sprockets as a set to everything wears evenly.

but why would you make the rear smaller? you ride freeway alot? your lowend will be slop mang!

go 45 in the rear

speedos are off by 5-10%

I'm geared up about 160 lbs. At 5th or 6th gear, I don't even need to down shift to accelerate. Yeh, lots of highway mile. I'll go fo 16/42 this weekend. Thanks all.