I recently replaced my chain and sprockets and went to a 13/40 combo but it seems more sluggish now compared to my stock 14/40...anyone have any ideas? I bought JT sprockets and 520 SRX Gold O ring chain. Please Help?

I switched mine to this in the past and had no problems. If it is sluggish I would look to other things you have done recently. A chain and sprocket change will not cause the problem your having.

it should actually come off the line faster with that no?

i dont know about coming off the line faster but it does give you more low end tourqe. on another hand you do rev out faster in first gear a lot. Maybe since you are going through first gear faster it seems like its more sluggish. I run trails so i need more lowend i rarley ever hit 5th gear.

I actually didn't like 13/40 trail riding. I would hit the rev limiter every time in first and second and drove me nuts. I actually though 14 was a better fit and seemed to be a bit faster. Obviously topend wise but overall up through the gears. This year I'm going to switch between the two on the same ride and see side by side.

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Shifting through first and second a lot with the 13T shouldn't happen. With the 13T front you almost never have to go down into first unless you are at a dead stop.

Since I put my 13T on I almost never put it in first, always start in second. The only time it goes into first is when I need to use my reverse.

I have 13/40 and I love it. Till now no probs.