Maintenance & Technical > KX500 Original
13T Front Sprocket
Motoroost1:
I see that there is a 13T front sprocket listed as available for the KX500 .
I would like to go this route but I am concerned about clearance issues between the chain and the engine case .
Has anyone tried a 13T sproket and did it fit correctly ? I have a 2003 KX500 .
Twosmokerfan:
Hey Mate,
I had a 14T when the engine was in the steel KX Chassis, with no problems.
A 15T fits in the KLX Chassis (it is a squeeze between the swingarm and the chain guide, with no problems up the front between the chain and cases) and that bike is set up for riding in the scrub with 14/50 gearing.
I can see no problems with a 13T and clearance between the cases.
I am wondering why you wish to put it on though...... :?
TSF
Foxx4Beaver:
do a search on here,there's alot of threads about front sprocket sizes and clearance issues....and if I remember correctly,the 13T was not a good choice, due to the chain wearing into the case,but I could be wrong.
Foxx
Polar-Bus:
--- Quote from: Motoroost1 on March 31, 2012, 11:19:07 PM ---I see that there is a 13T front sprocket listed as available for the KX500 .
I would like to go this route but I am concerned about clearance issues between the chain and the engine case .
Has anyone tried a 13T sproket and did it fit correctly ? I have a 2003 KX500 .
--- End quote ---
Do some searching. The quick answer is DON'T do it. If you run a 520 oring chain it wall grind into the case. If you run a cheap 520 non-oring chain, then you will have BARELY enough clearence and you will be ok, but the latter being said, running a cheap 520 non-oring chain on a 60 hp KX500 will cause the chain to snap, and most likely will destroy your engine cases anyway. So bottom line stick with a 14T, and swap rear sprockets to alter your gearing. Many of us prefer 14/49 gearing to make the KX500 a little more "trail friendly"
Motoroost1:
I currently have a 520 X ring chain and run 14 / 49 gears . Because of the low cost , I was considering trying a 13T front sprocket just to see how it would effect the low speed operation of the bike . Even though the engine has a lot of power , I still find that with14/49 gears , the bike has top end speed that I will never really use and low speed operation could be improved a bit .
It's certainly not even remotely worth risking the chain hitting the case so I will not consider a 13T sprocket an option any longer . That's why I asked the question . Thanks for the responses .
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