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Tunning up Vespa GTS 125
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kadlis
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2011 BMW R1200 GS Adventure, 2016 Vespa PX 150
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kadlis
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2011 BMW R1200 GS Adventure, 2016 Vespa PX 150
Joined: UTC
Posts: 116
Location: London, UK
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Any tips, how to get more power from GTS 125 without interfering reliability of the bike too much?

Many thanks!
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DougL
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El Macho
KTM Super Duke 1290, Vespa GTS 300
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DougL
El Macho
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KTM Super Duke 1290, Vespa GTS 300
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Location: Porto 4050-570
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I am afraid there is little you can do. The liquid cooled 4-valve engine in the 125 is already at the maximum. It gets around 15bhp compared to the aircooled leader's 10.8. The most you can do in real terms is change the variator, but it's probably not worth it on a 125.
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kadlis
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2011 BMW R1200 GS Adventure, 2016 Vespa PX 150
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Posts: 116
Location: London, UK
 
kadlis
Hooked
2011 BMW R1200 GS Adventure, 2016 Vespa PX 150
Joined: UTC
Posts: 116
Location: London, UK
UTC quote
dougl65 wrote:
I am afraid there is little you can do. The liquid cooled 4-valve engine in the 125 is already at the maximum. It gets around 15bhp compared to the aircooled leader's 10.8. The most you can do in real terms is change the variator, but it's probably not worth it on a 125.
what would the change of exhaust add to performance? Because currently it is totally standard.
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DougL
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El Macho
KTM Super Duke 1290, Vespa GTS 300
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Location: Porto 4050-570
 
DougL
El Macho
@dougl avatar
KTM Super Duke 1290, Vespa GTS 300
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Location: Porto 4050-570
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Very little apart from noise. I'm sure others may disagree.
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kadlis
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Hooked
2011 BMW R1200 GS Adventure, 2016 Vespa PX 150
Joined: UTC
Posts: 116
Location: London, UK
 
kadlis
Hooked
2011 BMW R1200 GS Adventure, 2016 Vespa PX 150
Joined: UTC
Posts: 116
Location: London, UK
UTC quote
thanks a lot for info! ;o))

I should get my 300 vespa in a week or so. I haven't tried to ride it yet, but are there any ways of tunning the 300 one?
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DougL
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El Macho
KTM Super Duke 1290, Vespa GTS 300
Joined: UTC
Posts: 9048
Location: Porto 4050-570
 
DougL
El Macho
@dougl avatar
KTM Super Duke 1290, Vespa GTS 300
Joined: UTC
Posts: 9048
Location: Porto 4050-570
UTC quote
kadlis wrote:
thanks a lot for info! ;o))

I should get my 300 vespa in a week or so. I haven't tried to ride it yet, but are there any ways of tunning the 300 one?
Why would you want to?

But yes there are. Polini variator, LV4 road exhasut. PM tuning tfi. I think you will find it just great the way it is, I do.

I previously had a tuned GTS 250 with a PM pipe, the tfi and the Polini. I really prefer it as standard.
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