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I want to change out my sprocket. What size should I go with? Prior expriences, next time, should have. Do I need to change front & rear sprocket and chain all at the same time. Bike has 10,500 miles. Thanks!
 

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The general advice is to change both sprockets and the chain all at the same time.

I have a 03 Spirit 750. The stock rear sprocket was a 41 or 42 tooth (can't remember which) and I dropped to a 37 tooth. I'm very happy with the results - the difference on take off is so minimal as to be almost unnoticable. But the difference at freeway speeds is enormous.

If you do the job yourself and you use a clip style masterlink, make sure you get the specific masterlink to fit the chain you get. I ran into problems trying to get a generic o-ring masterlink onto the chain I got. I ended up putting on a masterlink for a 530 chain instead of a 525 chain, then riding it to the dealer and having them take that off and put on the rivet masterlink provided with the chain.
 

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You'll get answers all across the board.. :)

I have had this bike > 3 years, and have had 41t (stock), 39t, and 38t (current) on it. I ride mostly solo on country roads, with very little interstate travel. Others think it's not significant, but there is a noticeable-to-me loss of torque. Passing usually requires a downshift, sometimes two. Personally, I would not go any smaller than 38t.

It's generally best to replace both sprockets and the chain at the same time, but I have gotten away with less. At around 6k miles, I went from the stock 41t to the 39t, and just took a couple links out of the original chain. Then at around 19k, I replaced all three items. The bike now has > 25k on it, and the chain & sprockets are holding up really well, requiring minimal maintenance.
 

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On my old 2001 750 ACE I ended up with a 38 tooth sprocket. I never touched the front one and ended up with 55K on the bike before I sold it.

38 was plenty fast off the line and was great on the top end.

--BB
 

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pocket aces said:
I want to change out my sprocket. What size should I go with? Prior expriences, next time, should have. Do I need to change front & rear sprocket and chain all at the same time. Bike has 10,500 miles. Thanks!
pocket aces,
My vote goes to the 37 toother; that's what I have on my 750ACE so I can't comment on the 38 or 39T's. IMO, if your gonna' do the swap, you might as well get the most bang for your buck and go with the set-up the gives you the most freeway gearing advantage.......that would be the 37 toother.

Sparks Hotchick pretty much covered it all.
Phil
 

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You might find that it's extremely difficult to purchase a 37t or 38t, since sprocket specialists hasn't made them in months and everyone else just resells them. I just bought a 36t because of that reason, but I'll be doing mostly highway driving so I'm not too worried about low end torque.
 

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AverageJoe said:
You might find that it's extremely difficult to purchase a 37t or 38t, since sprocket specialists hasn't made them in months and everyone else just resells them. I just bought a 36t because of that reason, but I'll be doing mostly highway driving so I'm not too worried about low end torque.
AJ,
Actually, I'm thinking of going with the 36T next time! I'll probably get one more season out of my 37T sprocket.......Then it'll be time for a new front and rear sprocket plus a new chain.
Phil
 
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