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Replacing rear sproket

  • Thread starter Thread starter se3388
  • Start date Start date
S

se3388

Guest
If I counted right my rear sprocket has 50 or 52 teeth (GS550E) and it seems to be wound pretty tight at 70 mph in 6th gear. I would like to replace it with a smaller rear sprocket to get a little bit more top cruising speed and let the engine run a little bit easier so do any of you have a suggestion on the size of sprocket? Also what size is the chain supposed to be?

Steve E.............
 
You didn't count right, if you did, it would be either 50 or 52 teeth, not both. 1st suggestion would be a repair manual. It will tell you a lot about your bike. I think it's a 520 chain, and stock gearing is about as good as it gets, except for drag racing, etc.
 
se3388 said:
If I counted right my rear sprocket has 50 or 52 teeth (GS550E) and it seems to be wound pretty tight at 70 mph in 6th gear. I would like to replace it with a smaller rear sprocket to get a little bit more top cruising speed and let the engine run a little bit easier so do any of you have a suggestion on the size of sprocket? Also what size is the chain supposed to be?

Steve E.............
Click to expand...

Chain is either 630 or 530, I would suspect 530. You can get an alluminum Vortex in a 530 in almost any size you prefer. The only down side is alluminum wont last as long. A nice option beyond the stock look is a Supersprox it has steel teeth and an alluminum carrier. If you decide to go with either the standard GS hub is the same bolt pattern as a 98 Bandit.

Vortex on a GS hub

BlueSprocket.jpg


Supersprox on the same GS hub (powder coated)

Hubandsprocket.jpg


HubPC.jpg
 
Last edited:
550 engines need to spin, if you lug it around like a Harely it will die.
 
rphillips

It does say 50 or 52 teeth.

jwhelan65

Now that is some nice looking sprockets, almost a shame to get those oily.

tkent02

Guess I'll just leave it like it is. On another note, it seems strange to see just 85 mph top end on a speedometer. Thanks for the info guys.

Steve E.........
 
Its a small ujm it needs to and is meant to turn fast. Dont worry about it. I think the revs sound cool on inline 4's. my opinion.
 
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