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Hypermotard 950 14 Tooth Front Sprocket

13K views 24 replies 14 participants last post by  HyperFreak  
I might be wrong but I’m pretty certain the 939 and 950 calculate speed from the abs ring so changing the gearing won’t make any difference to the reading. :unsure:
This is quite probable, but never the less, the speedo is off by about 4 MPH high.

Dave
 
No.

I had to go to a 108 link chain. Stock is 106. It adds to the cost and inconvenience that you suffer for better gearing.

You can use the stock chain if you go down 1 on the front. So if cost is a big issue, down 1 is the way to go.

Dave

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Yeah, I don't think stock, the speedo is even close anyway.

Whether you change the gearing or not, use a GPS app to get an idea of what your speedo reads at some popular speeds versus what the GPS says. Then when you know the cops are around, you can guage your speed more accurately.

Usually, with going up 2 teeth in the rear, I can count on the speedo reading about 5 over. That's usually good enough to keep me out of a ticket.

Dave

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It screwed it up even worse than it comes stock.

But do you really look at it?

(I think it reads high by 4 mph)

Dave

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Talked my with dealer today about putting on a 14T on my 950sp. They advised against it stating that when they have done it, they ran into to issues with the quick shifter. I am curious if anyone has installed the 14T on the SP model and run into any issues?


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I have a 939SP, so I know that I won't be answering your question EXACTLY.

However, I originally changed my front sprocket to a 14 tooth as I felt that the stock 15T left the overall gearing a little tall. The Hyper certainly doesn't need the top speed, you can only hang on for so long. I ran it like that and while I was pleased, I knew it could be better.

So, I changed it back to a 15T front sprocket and upped the rear from 43T to 45T. The bike feels much smoother, it doesn't feel like it's geared too low by comparison, and overall, it feels like it tightened the gearing perfectly.

Historically, I have always gone up 2 teeth in the rear on all of my bikes. Even on my R1s (multiple generations) and CBR1000RR Repsol, going up 2 teeth in the rear actually gave me more usable top speed as it took less time to get there/easier to pull upper range. I'm happy to report that my up 2 teeth method of change hasn't failed me on my Hyper either.

Of course, to directly answer your question; going up 2 teeth in the rear WILL NOT effect your quick shifter.

Dave