17t sprocket - Kawasaki KLR 650 Forum
1987 to 2007 Wrenching & Mods For maintaining, repair or modifications of Generation 1 KLR's. 2007 and earlier.

 
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post #1 of 3 Old 02-02-2017, 10:25 AM Thread Starter
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17t sprocket

I just replaced my stock 15t sprocket with a 17 tooth on my 88 650 for touring. Where I was hitting about 5100 rpms at 70 with the 15t I now only hit 4100 rpms at 70. seriously. I took the bike on some riverbed trails...briefly... but had to do a lot of clutching. The bike still punched up a couple big gullies with no problem, however, the min speed without lugging below 3000 rpms is 15mph, a lot for trails.

just some info for anyone looking into the 17t

It's rad!!
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post #2 of 3 Old 02-02-2017, 06:51 PM
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For that reason, I carry a smaller sprocket with me when I take a long highway ride to get to some good sand, gravel, rocky, steep dirt riding. Put the smaller sprocket on and save the clutch and enjoy the riding.

I will point out that going from a 15 to a 17 front sprocket would cut your engine speed to 15/17 of the original speed. 15/17 x 5,100 rpm = 4,500 rpm, but that is still like having a 6th gear.

You may have drop down to 4th gear to maintain 70 at higher elevations like 7,000 feet or into a head wind, but that is what 4th is for.

Last edited by GoMotor; 02-02-2017 at 06:55 PM.
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post #3 of 3 Old 02-02-2017, 08:03 PM Thread Starter
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Word. Thank you. And for the geometry lesson I'm new to motors
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