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Old 06-12-2008, 05:18 AM   #1
canuck479 OP
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sprockets for BMW F650GS

Does anybody know a source for different size sprockets for the F650GS I am looking to get the RPM a little lower at highway speeds.
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Old 06-12-2008, 05:22 AM   #2
johno
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I have just replaced my sprockets and chain.
I used JT Sprockets.

www.jtsprockets.com
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Old 06-12-2008, 05:58 AM   #3
greer
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Old 06-12-2008, 06:13 AM   #4
RivahRider
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I got my rear 45-t sprocket here http://www.sprocketspecialists.com/SprocketMain.aspx
Front 17-t sprocket here http://www.bmwsantacruz.com/main.html

Very good set-up for highway. My .02
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Old 06-12-2008, 08:18 AM   #5
when the road bends
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ti sprockets

How many miles do the sprockets and chain usually last on highway use?



Has anyone ever tried any of the lifetime guarateed titanium sprockets?

I wonder if they even fit our bikes.
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Old 06-12-2008, 08:59 AM   #6
JDLuke
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Quote:
Originally Posted by when the road bends
How many miles do the sprockets and chain usually last on highway use?
That's going to depend on many factors, including chain quality and your cleaning/lubrication habits.

I've seen sprockets that were shot after a few thousand miles, and I've seen sprockets that have lasted 25K miles+ on these bikes. My current set probably has 10K miles on it and everything looks new (I've used both Chain Wax and currently ATF)

Never tried a Titanium sprocket.
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Old 02-17-2012, 04:12 PM   #7
johnalex
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Sprocket hunting

Just ordered a 17 tooth front from http://www.powersportsuperstore.com.
Still trying to find a 43 tooth rear.
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Old 02-17-2012, 05:56 PM   #8
kubiak
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if you cant find the right tooth ratio sprocket specialist or specialties cant remember the name correctly can custom make any size you want. they also have sprockets ready in a few sizes for the dakar. i have a 14 and 15 tooth front from them since i wanted more offroad gear ratios.
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Old 02-17-2012, 06:06 PM   #9
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I bought jt sprockets available all over the Internet.
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Old 02-17-2012, 10:25 PM   #10
kubiak
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Quote:
Originally Posted by jnorton1 View Post
I bought jt sprockets available all over the Internet.
yea i see the jt sprockets all over ebay. i got a few front jt sprockets off there.
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Old 02-18-2012, 12:46 PM   #11
JimR
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If you go over to the "Chaingang" web forum they sell different aftermarket sprockets, you may find a set that suits you.

As for the high RPM's at highway speeds, the Rotax is designed, and some say it likes, to run at high revs for extended periods of time. At one time Rotax advertised on its website that the engine could run 7,500 rpm's continuously between engine services.

I get 24k miles out of the OEM chain and sprockets. Very little dirt riding, some gravel, mostly paved roads and commuting. I clean with WD40 and protect from rust with with Honda chain lube every two weeks, more if I've ridden in the rain. IMHO rust, not dirt is the chief enemy of the "O" ring chain. Everyone has there own method, but as stated earlier cleaning and protecting are paramount. Regards, Jim.
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Old 04-26-2014, 11:19 AM   #12
MiamiPhoto
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Would a 17 front sprocket and a 47 rear sprocket teeth combination good? How do you calculate the front / rear sprocket "teeth" ratio?
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Old 04-26-2014, 11:45 AM   #13
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Originally Posted by MiamiPhoto View Post
Would a 17 front sprocket and a 47 rear sprocket teeth combination good? How do you calculate the front / rear sprocket "teeth" ratio?
This Should be helpful


http://faq.f650.com/FAQs/SprocketsOtherSizesFAQ.htm
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Old 04-26-2014, 12:25 PM   #14
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Originally Posted by AlwaysGrowin View Post

You are awesome! THANKS!
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Old 04-26-2014, 07:12 PM   #15
leafman60
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17-tooth front sprockets are readily available from JT Sprockets.

Manufacturer number is JTF 402.17

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