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Discussion Starter · #1 ·
I have changed the stock front sprocket 15 by a 14.
My dealer has fitted it (82€ with fitting). They only removed / fitted sprocket .

It's not a radical mod but after doing a day ride on various roads, i noticed a little bit quicker regime rmp rise and better transition with shifter dqs, that's the most significant change.


Now i'm waiting for new clip on LSL to change my position, i 'l receive them this week.
 

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I have changed the stock front sprocket 15 by a 14.
My dealer has fitted it (82€ with fitting). They only removed / fitted sprocket .

It's not a radical mod but after doing a day ride on various roads, i noticed a little bit quicker regime rmp rise and better transition with shifter dqs, that's the most significant change.


Now i'm waiting for new clip on LSL to change my position, i 'l receive them this week.
I take it that changing the front sprocket has no effect on the speedo, where is the speed taken from?
 

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Discussion Starter · #4 ·
Id be interested to see how the clip ons fit and look
I 'll publish a thread about clip on lsl after fitting.
 

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I take it that changing the front sprocket has no effect on the speedo, where is the speed taken from?
I have wondered about that too but essentially the rotation is the same peripheral distance so perhaps it has no affect because the tyres size determine the peripheral distance.
 

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I take it that changing the front sprocket has no effect on the speedo, where is the speed taken from?
More than likely taken from the front wheel ABS speed sensor.
 

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939 has already relativ short gearing, so for me no need to change the sprocket. That was different on my 848 and 996!
 

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I feel like the gearing is spot on for our SS. I dont feel the need for the change. Am I missing something? :confused: Not banging on you guys for wanting what you want, just trying to understand the need, is all.
 

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It's to give her a wilder behavior.
The stock gearing is right but feels a little linear especially when you come from older Ducati models.
Not not necessarily a bad thing but I can understand the need.
 

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I feel like the gearing is spot on for our SS. I dont feel the need for the change. Am I missing something? :confused: Not banging on you guys for wanting what you want, just trying to understand the need, is all.
The smaller front sprocket (or larger rear) will increase the "snappiness" of the engine, at the cost of top speed. More useful for city riding, hooning and doing wheelies, but you run down the freeway at higher revs.
 

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I feel like the gearing is spot on for our SS. I dont feel the need for the change. Am I missing something? :confused: Not banging on you guys for wanting what you want, just trying to understand the need, is all.
Just depends on how and where you ride, I suppose. Stunters do it for one reason, I do it because I don't live by an autobahn, but in a city surrounded by mountains with roads to match 5 minutes away. Much of my riding is on roads where 5th gear is only briefly used and 6th even less. My primary concern is driveline smoothness and engine response, with fuel economy a close second.

When heading into town tonight I'll be cursing the gap between 1st and 2nd gear...1st screaming and lurching, or 2nd lugging and lurching. The few rpm higher on the open road is more than compensated by better gear choices on backroads and in town.

I'm going to log fuel mileage before and after, and will report. Every other bike I've had in this location has shown an Increase in economy with slightly lower gearing, as I can use a higher gear more frequently. To achieve about the same ratio as the O.P. I'll add teeth to the rear instead to maximize chain and sprocket and life.
 

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Discussion Starter · #14 · (Edited)
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Discussion Starter · #15 ·
It's to give her a wilder behavior.
The stock gearing is right but feels a little linear especially when you come from older Ducati models.
Not not necessarily a bad thing but I can understand the need.
The behavior is not like my previous monster 1100s with 14 and termi , after several days i appreciate a lot this small change .

The most future change will be a beautiful low aftermaket exhaust and a good map .
 

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I did this on my Monster as I do a lot of city riding. If it does make a difference in 1st and 2nd I think I will change out the front sprocket on the Supersport. How easy of a job is it to change out?
 

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I put a 14T on my 848 because I have quite a distance on a rough country track through the woods before I get to a tarmac road. The SS does not need one at all, just put it into Urban mode and I can new ride that track in 2nd gear.
 

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The only issue I have with maybe first gear is at speeds at around 15MPH, so I guess that's where the need is...? But I don't spend much time there at all. Otherwise, I like the gearing as is. It's certainly better than the gearing I had on my Hyper 821.
 

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....engine response...

To achieve about the same ratio as the O.P. I'll add teeth to the rear instead to maximize chain and sprocket and life.
Please let us know what you choose and your impressions...
 
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