A note on throttle spacers

On one thread somebody said that if you reverse the throttle 180° then you don’t need spacers. I tried it and had the same problem mentioned above where it would not start

Interesting. Having used the spacers on a '14 1199 and a '20 SFV4 I'd report the "need" is much less there for the SFV4. With the '14 1199 you were trying to solve what felt like a greater slop problem with a fueling problem. With the SFV4 its MUCH better.

I scanned my bike with and without the throttle spacers installed. They made absolutely NO difference in throttle position when closed.

So they do not cause issues on all bikes.

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ArcticWhite said:

they do not cause issues on all bikes.

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I haven’t had a single issue on either Duc

I have the JetPrime throttle tube. It's about the same money as the spacers and does the same job, perhaps a bit more robust.

Absolutely no issues with throttle not closing etc. And makes such a big difference when picking up the throttle from fully closed. So much smoother.

Eenybear said:

For those new to modern Ducati bikes, my experience may help. Especially if you’re a bit leery of taking the tools to your new ride.

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Just received (and installed) mine. At first, I thought "there is no way these is going to fit in here (width-wise)", but I hadn't pulled the front part of the throttle assembly forward enough, so the throttle didn't separate much to give it the gap. Once I worked that bit out, the rest was pretty straight forward.

Your notes helped... so thanks!

Looking forward to check it out on a ride soon!

I had the chance to look at a BMW S 1000 RR but didn't get to ride it. I noticed however the throttle has zero free play in it. Does BMW insert some electronic freeplay or is it direct like using spacer or a aftermarket throttle tube?

Upon popular demand, hereby a link to download @Phl his 3D printer files from my Dropbox. nJoy

RdashP said:

3D print them yourself: Throttle spacers
@Phl and myself are willing to provide the files... for free. just PM us.

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Hey man, I was wondering if you still had the file for the throttle spacers? I’m new to the forum so I’m not sure how to send a private message

DeAlejandro said:

Hey man, I was wondering if you still had the file for the throttle spacers? I’m new to the forum so I’m not sure how to send a private message

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sure so does @Phl these are his. just drop us a pm with you email?

DeAlejandro said:

Hey man, I was wondering if you still had the file for the throttle spacers? I’m new to the forum so I’m not sure how to send a private message

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just follow the link above to download from my dropbox

Arguably, Domino leads the industry in throttle development. Their RBW system has zero throttle slop/play. Additionally, I machined a Delrin bearing onto the end of my bar end that has a precision fit inside the Domino throttle. The result, no more loose throttle tube on the bar. Super smooth and precise.

Nice job, I used shimstock wrapped around the bar also zero slop, as for the spacers, not going to affect my laptime but I used 2 cents worth of neoprene tube when I tried it. Worked perfectly
Shimming the throttle tube was a better mod for me.

I’d steer clear of those throttle spacers and just spend a few bucks and by an upgraded throttle assembly that doesn’t have that slop built in.

fun fact, those spacers can mess with your throttle position sensor in a way that in turn messes with your blip shifter

They build that slop in for new riders like me who in the begging lean on the bars like a bicycle.

when riding with improper form like that if there is no slop you blip the throttle every time you move, which can be dangerous at worst and unsettling and twitchy feeling at best.

better to get rid of the slop and learn to ride correctly though.

The “throttle slop” as it has now become known as is quite simply, good enough OEM mfg. It’s not anymore complicated than that. It’s cheap plastic piece made for the masses. As I stated the Domino RBW and the Domino SBK cable system don’t have the play and the GP throttle I played with at COTA was very precise with a precision fit on the bar as well. It’s simply time and money.

As far as the TPS is concerned, the TPS, APS and throttle bodies sync on ignition. Unless the plastic spacers are significantly causing and interference rotation of the potentiometer wheel, this is not a factor and I’ve never seen any that did.

I believe the throttle play has nothing to do with cheap manufacturing or for people that dont have proper riding technique. It would be easy for them to have produced no play. If you take a throttle apart they did it deliberately. Riding technique is not the likely reason, as when you are on the throttle, the theottle play doesnt come into effect. It only occurs at on/off throttle transition. If you are shifing your body and it is translating into throttle application, you will be experiencing that at times other than full on/off throttle as well.

It is there in previous bikes due to a physical throttle cable and so turning the bars doesnt affect throttle application. There has to be enough play in the cable to prevent this, which causes play in the throttle. Electeonic throttles dont have this issue, yet manufacturers continue to mimic this. I would guess they are going this effort of specifically engineering throttle play into the system to either mimic a bike with physical throttle cables so it feels the same as older bikes and people dont feel there is something wrong, or it is mandated by some regulation for some reason.

Also, i have scanned my bike with and without the throttle spacer installed using tuneboy. The throttle steps are exactly the same at key on and idle with and without the spacer. This means there should be no affect on shifting or anything else, as the engine computer sees the exact same input from the throttle with and without the spacer.

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Could be to avoid partial throttle opening during braking applications too.


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Crap, I guess Domino got it wrong . Should have followed the Ducati engineering. I think I’ll take my Domino apart this weekend and loosen it up with the dremel

Whatever the reason, a little throttle play is awesome and makes street riding more forgiving, especially on a bike with so much power. Obviously this throttle play is a matter of preference. My dragster has basically no play and even that at times gets very jerky over road bumps. I'm strongly considering even taking out the 1 (smaller) spacer out of my panigale. Having both in was not an option after 1 day of riding with that so i left the smaller of the 2 spacers in it. Being +3 on the rear sprocket probably doesn't help my case either but the spacer will go b4 the sprocket size change.