AMF Racing

well I did the 15/43 sprockets, 520 chain, speed o healer, and valve adjustment today. all i can say is WOW. the bike is an absolute blast to ride, should have done this mod 20k miles ago. my stock chain lasted me 23k miles, and recently some of the rollers in the chain became missing. made it STUPID loud and impossible to adjust. this is by far the best mod I have done to the bike. no highway cruisin yet, but it def revs a lot faster and gets into the power way sooner. here's where i got the sprockets and chain from, great deal IMO.....

http://www.sumofallparts.net/product...e-0caed8b5eca1

LineArrayNut

get on the highway some and tell me if i should get a 520 16T front; seemed like most said it was a bit buzzy at speed on long highway drones... I got the same kit, but haven't put it on yet...

hawkman996

I've had the hawk geared 15/43 for over three years now. I went through one vortech rear sprocket in 4k miles, a afam rear in 7500miles, and now I have a steel suncoast to last me. I ride 50 mile round trips daily with over half of that on the highway and it never bugged me. If you are worried get a 15/42 combo....it will give you most of the extra low gear you want and be a little better on the highway.

Congrats on the new set-up AMF.

SD Hawk

Okay, that looks like a smok'en deal. $149.00
What are everyone's expirience with alu vs. steel spockets?
Just wondering if I should pony up the extra $$$$ to go with a steel sprocket set up....

hawkman996

If you go aluminum stay away from vortech....mine only last 4k and the teeth were badly worn. It is very light weight but for street riding I'd stay away. The afam is nicer and will give you almost double the mileage and is still light. I'm on my third sprocket and I went steel this time because I got tired of swapping them out. The steel should last 15-20k miles like my stock sprocket did.

AMF Racing

imo steel defeats the purpose of a 520 chain conversion....the idea is to loose weight. i'm not worried if they only last like 4k miles or so, they arent that expensive to buy. took it on the highway tonight for a little. with my jardine its not buzzy at all, def notice the higher rpm's, but its not a big deal. most of my riding is city so this setups is sweet.

hawkman996

The weight difference is very minimal if you get the right steel sprocket. I liked the weight loss too until I had to keep replacing sprockets. That was when I was commuting on the hawk almost everyday.

I agree the extra weight lossed from the vortech is great but on the street it will not matter much.

I agree the higher rpm's on the highway does not bother me.

superbeater

I would be concerned that as aluminum sprockets wear, they are affecting the life of the chain by causing some stretch. Steel sprockets should protect chain life as well as lasting longer.

killer5280

Steel sprockets are the only way to go on a streetbike. I have 15/43 also, and will never go back to stock.

Gregw

You could always use both steel and aluminum. I just installed a Supersprox the other day. It looks like they have a 520 setup that would work too.

AMF Racing

gotcha, we'll see how long it lasts. i def think the bike should have come geared this way. it makes the bike feel lighter and as if it has a ton more power.

hawkman996

Yes that gearing combo is damn near perfect. I like how after the swap I could leave it in 6th on the highway and when I grab a handful of throttle she goes. Before she would bog and a year later I would be moving! haha

COLE