Possible transmission gear ratio change - K-Bikes.com - Excellence in Motion
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post #1 of 3 (permalink) Old Mar 16th, 2014, 9:17 am Thread Starter
Join Date: Oct 2012
Location: , NC, USA
Posts: 7
Possible transmission gear ratio change

Hi all once again,

I recently purchased a transmission from an '08 with less than 6k miles. Before I put it in I am sending it off to get undercut and fluxed and what not. While I have the tranny in the shop is it possible to change the 6th gear to something taller? I would like to cruise at lower RPM on the highway while increasing the potential top speed of the bike.

Has anyone done this before on the K1200s or 1300s?
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post #2 of 3 (permalink) Old Mar 16th, 2014, 12:41 pm
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Join Date: Aug 2006
Location: Chicago, IL, USA
Posts: 4,827
You certainly could but you'd have to have two new gears machined. One on the driven shaft, and the complimentary gear on the drive shaft.

As far as top speed, I think the k1300s is ecu limited at 186. I can't imagine needing to go faster than that other than for bragging rights.

'06 K1200R- in pieces
'73 Honda CB500F- slow but fun.
'77 Yamaha XS 750 triple- kinda
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post #3 of 3 (permalink) Old Mar 17th, 2014, 7:30 am Thread Starter
Join Date: Oct 2012
Location: , NC, USA
Posts: 7
I have an '05 K1200s which maxed out around 172 according to the GPS. This is plenty fast for me on the top end. However, I like to cruise around 120ish maybe a bit more on nice days. I'm not a speed demon but coming from Germany and being able to cover lots of distance fast is nice.

I thought maybe the final drive from the GT would work but we already share the same gears
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