just curious...are the sprockets for the f4 the same as the f4i?....and is the 520 conversion good?...i am just trying to find the best deal and best set up for acceleration....thanks in advance

 

sprockets are the best bang for your buck as far as performance. the 520 conversion drops a lot of weight which helps also.

I would go with that if I were you. I dropped a tooth in the front and added a tooth in the back.

 

ok the 520 drops weight but is it still strong and will it last as long as other regular size chains?

 

it will wear a little faster, but it is not a big deal.

 

ok well are the f4 and f4i sprockets the same?