XR650R HIGHWAY SPROCKETS?


15 replies to this topic
  • HondaXR650R

Posted August 29, 2004 - 06:03 AM

#1

What are the best sprockets (# of teeth) to run on an XR650R for the street? I heard you have to remove the crankcase protector in order to go with a 16T front sprocket. Can anyone with experience with this comment? This bike is geared way too low for pavement, but I feel it's (torquey) potential. :thumbsup:

  • jtc89

Posted August 29, 2004 - 08:28 AM

#2

XR's Only has a different case protector to go with the 15 tooth cs sprocket. Don't think you can get a 16 tooth to fit. Use a 39 to 42 tooth on the rar wheel and you will get the speed you want.

  • DirtyChris

Posted August 29, 2004 - 09:03 AM

#3

I don't know of anyone making a 16T for the BRP. I run 15/45 and have been clocked (by a riding buddy on a street bike) at 110mph.

  • Tarkus

Posted August 30, 2004 - 10:49 AM

#4

I'm running 15/41 and love the 3600rpm, or so, 60mph cruise (I have a chrome electric tach. that visually matches a B-D dual-sport speedo). Bottom of 5th is about 50mph. 40mph isn't lugging 4th, and 30mph isn't lugging 3rd. I've seen an easy 118mph (it was still pulling) on a very hard-packed surface with a bit of a tail-wind (on a Baja-Designs chrome analog speedo which I hear is ~6mph optimistic up over 100mph) 60 to 90mph, top gear... Pick your cruise!

  • mikekay

Posted August 30, 2004 - 12:04 PM

#5

hey Tarkus what make of rear sprocket are you using to run the 41? Is it steel? OEM per Australia specs? very curious...

  • Tarkus

Posted August 31, 2004 - 10:47 AM

#6

Howdy Mike
It's the stock Honda "Aussie-spec." steel 41t. I read about it in a bike mag. and asked my local Honda shop to bring one in for me. He checked his computer and there it was, just like ordering any other part for a North-Am machine.
Only thing to watch is your chain-slider wears faster.
I just love running that "tall hog" up through "them tall gears"...woo-hee :thumbsup:

  • Tarkus

Posted August 31, 2004 - 10:49 AM

#7

Howdy Mike
It's the stock Honda "Aussie-spec." steel 41t. I read about it in a bike mag. and asked my local Honda shop to bring one in for me. He checked his computer and there it was, just like ordering any other part for a North-Am machine.
Only thing to watch is your chain-slider wears faster.
I just love running that "tall hog" up through "them tall gears"...Wooo-Heee. :thumbsup:

  • chrome-crf

Posted August 31, 2004 - 01:34 PM

#8

You can order any size you want through www.sprocketspecialists.com

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • thmprracer

Posted August 31, 2004 - 05:51 PM

#9

You can order any size you want through www.sprocketspecialists.com


Chromes correct. i can also vouche for SS they are good to deal with and ship fast too!

the BRP will pull any gears it just doesent matter! haha

best is 15 and 41 highway and 44 around town for good rear wheel riding. :thumbsup:

  • huntmaster

Posted September 01, 2004 - 11:26 AM

#10

I'm running 15/41 and love the 3600rpm, or so, 60mph cruise (I have a chrome electric tach. that visually matches a B-D dual-sport speedo). Bottom of 5th is about 50mph. 40mph isn't lugging 4th, and 30mph isn't lugging 3rd.


Holy smokes. Are you running highway pegs and a sissy bar too? he he. Can you still ride trails with that gearing?

  • Dirt4me

Posted September 02, 2004 - 11:12 AM

#11

For those running 15/41-44:

Did you need to change the length of your chain or is there enough adjustability at the rear axle?

  • Tarkus

Posted September 02, 2004 - 11:58 AM

#12

Hmm, :lol: Stretch-pegs and a back-rest?...never thought of that...good idea H.M., I just might have to try 'em out! :awww:
Like I've always said: "If you have a few thoroughbreds" in the stable for the more challenging rides "Baja-gears" on a "Big-Red-Pig" ain't a bad thing. :thumbsup:

Hey Dirt4me about the chain, I had to remove four links from the fairly fresh stocker to run 15/41 final gearing. I believe Honda recommends keeping the axle forward as much as possible on the B.R.P. for handling reasons. If you go for 'em; brake the chain, mount the sprockets, reinstall the wheel with the axle forward, close to the first allignment mark, fit the chain over the new sprockets to find your second chain-brake point making sure you leave the right ends behind to accept the master link. It's easy if you watch that last point! :devil:

  • HairyScary

Posted September 04, 2004 - 11:58 PM

#13

I'm running 15/41 and love the 3600rpm, or so, 60mph cruise (I have a chrome electric tach. that visually matches a B-D dual-sport speedo). Bottom of 5th is about 50mph. 40mph isn't lugging 4th, and 30mph isn't lugging 3rd. I've seen an easy 118mph (it was still pulling) on a very hard-packed surface with a bit of a tail-wind (on a Baja-Designs chrome analog speedo which I hear is ~6mph optimistic up over 100mph) 60 to 90mph, top gear... Pick your cruise!


I just put a gearing and speed calculator program in the files section on the Yahoo XR650 group that allows you to compare different sprocket ratios (and for different bikes even). It shows 15/41 @3600RPM with a 27" rear tire to be 58MPH
:thumbsup:

http://groups.yahoo....tor/gearing.txt

  • Tarkus

Posted September 05, 2004 - 07:01 AM

#14

Thanks a million man. That's a real gem of information for alot of us bikers on the net! I was checking the chart out yesterday that showed speed @7250rpm in each gear with a number of sprocket combinations and was pleased to see my speedo/tach@60mph read-out (~3650rpm) was right in the ballpark considering tire wear and typical speedo error at that speed. I thankyou, my BRP thanks you! :thumbsup:

  • alex650

Posted September 14, 2004 - 07:37 AM

#15

I run 15/42 ... Works just fine ... :thumbsup:

  • KeithBoyd

Posted October 10, 2004 - 11:23 AM

#16

I run 14 front and 38 rear....cruise at about 75-85mph....a 15front then would be even better...... :cry:





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