520 Chain/Sprocket Conversion Kit

[RC51 John]

I own a 2000 RC51 with and power commander and slip-ons.

I need a new chain and I am going to buy a 520 conversion kit.

The stock sprockets are 16/40.

I am thinking of going with a 16/42, but a few sites have suggested a 15/41.

I want quicker acceleration, but I don't want to do wheel stands every time I crack the throttle open.

Is the 15/41 more for the track?

Any suggestions?

[JudgeDredd]

youll be happy with just 1 tooth up.. its a noticable difference.. Dont let others try and convince you to do some crazy gearing.

[gixxerlife]

I'd go with the 15/41 (+4), every tooth down in the front is like adding 3t to the rear.. front sprockets are cheap and a 5min swap, and you can always put a stock 16t-(520) and only be +1 if ya don't like the 15t on the new 520 setup

520 conv's are a waste in my mind... Stick w/530 and run some different setups all by just changing the front sprkt (+3 increments), but the smaller you go up front the more the chain takes the beating...

my .02--->

I'm @ -2/+15 (15/57) and luv it..

[JudgeDredd]

Where the hell did you learn that every tooth down in the front is like +3 in the rear.

[gixxerlife]

Years of changing setups..... Check into it, its right on.... Ya doubt me..ha

cheapest way to make a quick noticeable change, but like I said above it kills some chains.....

[adamgh81]

Well speaking from experience on my 03 RC51, I had the stock gearing and changed that right away. I had 15/41 520 for 3 years and just put on new 15/42 520 this past week. I haven't ridden much since the 15/42 yet, but the 15/41 was a great ride. I rode to work today, so hopefully I'll get to hit a few nice roads on the way home to let you know about the new gearing. I'd at least go with 15/41 520...for more info look at www.rc51.org (modification info) and www.rc51.com (forum). Some guys on rc51.com can get you a 520 set up for a decent price. Let me know if you need any other help. It's good to see another RC on here.

[RC51 John]

Thanks for all the info. I totally forgot about the speedzilla.com forums.

I'll have to ponder this over the long winter months.

[R6Chic]

Hey, just my 2 cents. If you look at your final gear ratio, say 2.75:1, that tells you how many rear teeth = one front tooth. That would give you approx. three teeth for most bikes/ratios.

P.S. I used to have a savvy technician help me out with the R6. He also had an RC with a 520 conv. = to +7 in the rear for the track & street.

[owndjoo]

520 is mainly for racing, we are trying to lose as much rotating mass as possible to gain acceleration and handling. 520 chain weighs slightly less so that's what we go for.

[shittygsxr]

Sorry to bring back an old thread. Does anyone have a chain riviter tool that they could loan out for an afternoon?

[adamgh81]

I bought one last summer, you got some beer?

[shittygsxr]

Do I have beer ??? Ha, no but I can get some!!! Im in no rush but do you have any maintenance you need to do? I have impact wrenches, torque wrenches. shit if you need to do some powdercoating or anodizing i have all of that stuff in the garage.

[adamgh81]

I'm joking man, I do need to flush my radiator before spring riding. Let me know when you need to borrow it, I already busted a pin for it but took it back to Iron Pony and they gave me a new one. I learned the hard way to grind off as much as I could when removing the master link.

[shittygsxr]

Hey ill let you know. I already removed the old chain and I just need to press the new master link