[piscineaide]

i use 13t front and 36t rear sproket with 20" tire!!!

my question is how much bigger is a 37t rear spocket??
can it fit with a prm rear swign arm skid plate....i dont whant to loose too much clearance cuz sometime the skidplate get big hits and rubs again the sproket!!!

does any one have a sproket size "calculator"? or a link for the diameter sizing???

i whant to change that gearing because those bike just have TOO much top speed for gncc races plus they lack a bit of torq!!!!!plus they are too fast in 1st gear in VERY thing sections in the wood

 

[MXQuadRacer]

In terms of the calculator and figuring out gearing, check out Rob's post in this thread:

http://www.ltr450hq.com/invision/forums/in...mmonly+accepted