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SA50 Secondary Gear Upgrade Suggestions?
Posted: Tue Jul 05, 2011 12:28 pm
by pattersondm
Hello all again. So I am looking VT cycle site and see I can get either the 16x41 or 16x42 secondary gear change set which is 8.96:1 or 9.1:1 respectively. Does the community have any suggestions on which is 'best' or better? I figure they are so close won't make huge differences except in the top end speed but would rather ask first then have regret later. Also, I found someones great tutorial on here on doing the gear install which was super informative.
Also, if you look at my signature you will see the changes I have made thus far. Is there mods/changes I should be making before doing a secondary gear change? With my current set-up I am hitting ~40mph.
Once again thanks for the continued support!
Re: SA50 Secondary Gear Upgrade Suggestions?
Posted: Tue Jul 05, 2011 12:39 pm
by dun rite
If I remember correctly you did upjet with the derestriction? I just ordered the 9:1's from steve at vtcycles. Don't know why I chose that set, just seemed right. Don't think it will make that much of a diff either way.
Re: SA50 Secondary Gear Upgrade Suggestions?
Posted: Tue Jul 05, 2011 1:08 pm
by pattersondm
Dun rite, I did indeed upjet to a #85. I would like to get a #82 jet as well. I need to do a plug chop to see how she looks after making these changes though.
Re: SA50 Secondary Gear Upgrade Suggestions?
Posted: Tue Jul 05, 2011 7:54 pm
by bakaracer
if your going to run the stock bore. I would suggest the 10to1 gearset. the 9to1 is a bit much for the stock bore to turn. for the lighter guys(under 135lbs) it will be ok. for the heavier guys it will strain the motor a little. with the 10to1 you will be in the torque band better for a stock bore. if you are planing on upgrading to a 72cc or bigger bore, than go with the 9to1 gears or 8.44to1
Re: SA50 Secondary Gear Upgrade Suggestions?
Posted: Wed Jul 06, 2011 8:23 am
by ktroy
I got the 9.8:1 from vt cycles and am very happy with them. Lots of mountains around here so the lower gearing helps.
Re: SA50 Secondary Gear Upgrade Suggestions?
Posted: Wed Jul 06, 2011 2:38 pm
by pattersondm
ktroy wrote:I got the 9.8:1 from vt cycles and am very happy with them. Lots of mountains around here so the lower gearing helps.
ktroy, I was just looking at the 9.8:1 last night. Did you see top end improvement as well?
Re: SA50 Secondary Gear Upgrade Suggestions?
Posted: Sun Jul 10, 2011 4:44 pm
by Trafficjamz
pattersondm wrote:Hello all again. So I am looking VT cycle site and see I can get either the 16x41 or 16x42 secondary gear change set which is 8.96:1 or 9.1:1 respectively. Does the community have any suggestions on which is 'best' or better? I figure they are so close won't make huge differences except in the top end speed but would rather ask first then have regret later. Also, I found someones great tutorial on here on doing the gear install which was super informative.
Also, if you look at my signature you will see the changes I have made thus far. Is there mods/changes I should be making before doing a secondary gear change? With my current set-up I am hitting ~40mph.
Once again thanks for the continued support!
get some 9.8:1 gears 15x42 and you should see 45mph
10:1 are for the se50 and require the primaries and secondary gears to work (cant mix and match se50 and sa50)
I have never heard of 8.96 gears (16x41)
Is it time for a tooth tally chart change?

Re: SA50 Secondary Gear Upgrade Suggestions?
Posted: Sun Jul 10, 2011 6:11 pm
by pattersondm
TrafficJamz thanks for the reply.
I pulled the 16x41 or 8.96:1 information from vt cycles website (
VT Cycles Product Link). If in fact the 8.96 does work in the SA50 would you advise I still go with the 9.8:1, or even the 16x42 since VT Cycle sells those as well? After doing the gear change I don't plan on doing any more mods anytime soon.
My main objective was to be able to travel on some of the 45mph roads around my house at WOT, but then cruise along at slower speeds on the side streets at partial throttle. Already seen great improvement with changes and hoping this last one will push me over the top while still retaining reliability, and longevity.
Also, I liked the chart don't believe I had seen it before.
Re: SA50 Secondary Gear Upgrade Suggestions?
Posted: Sun Jul 10, 2011 6:55 pm
by Trafficjamz
pattersondm wrote:TrafficJamz thanks for the reply.
I pulled the 16x41 or 8.96:1 information from vt cycles website (
VT Cycles Product Link). If in fact the 8.96 does work in the SA50 would you advise I still go with the 9.8:1, or even the 16x42 since VT Cycle sells those as well? After doing the gear change I don't plan on doing any more mods anytime soon.
If you are a bigger guy (over 150lbs) 8.96:1 gears may be a bit too tall for the stock bore to handle.
9.8:1 gears pushed me (225lbs) to 45mph pretty easy.
