The bike doesn't really care what sprocket it has. "Best" sprocket depends on the rider's preferences and ability. If you're spinning out and want more top speed - get a smaller one. If you're bogging down and slow off the start - get a bigger one.
If the driver/freewheel isn't too badly worn you can keep using it even if you replace the sprocket.
haro F3 is better
usually you are a luck man if you can find any decals from a haro bike, i had the same problem and haro informed me that they dont hold on to past bike decals so your out of luck sorry
You can get a 9 tooth sprocket, you will need a conversion kit to do it. Haro makes a decent one just do a search for Haro 25/9
Haro is a brand, and they have several types of bicycles. And no, they aren't "the best", whatever you mean by that.
Go with haro f series because there the best and will last the longest. Also the haro f1c is not too small at all
Bicycles as a rule don't hold on to their value very well, so half the store price is a good starting point.
Both Eatern and Haro buys their sprocket from other manufacturers, and the sprockets don't really care what bike they're put on. However, there are two different types of BMX hubs, and sprockets can only be moved between hubs of the same type.
The best sprocket comb for lc135 is 15 37 which the ratio is 2.47
Best sprocket combi for rj 110cc - 14 36
ANSWER: I believe that Haro is the best BMX complete bikes for the money. I love my Haro BMX race bike.